Let me start by saying that I committed Cardinal Sin #1 of radar detector testing: Running both units simultaneously over the course of 2 days. Not condoning this practice in any way, shape, or form. Did this at my own risk so YMMV. Radar Detectors: Valentine Research V1 v3.872 purchased direct circa 2010-2011 Uniden America Corporation R3SLV, Firmware 1.37, purchased last week from Rakuten Neither manufacturer was informed beforehand of the "test" to prevent "souped up and/or ringer" units being provided. Test Vehicle: 2015 GMC Sierra 2500HD Denali Duramax CCSB towing a 40 Foot enclosed trailer to ensure maximum radar signature. Radar Guns Used: Numerous 33.8, 34.7, 35.5 frequency Ka Band units, unconfirmed 24.151 frequency K Band unit. These were provided by unwitting law enforcement agencies throughout South and Central Texas. Unknown Variables: BSM systems on Cadillac CT6 or CTS, (Can't tell exact model but then neither can anyone else because their sales blow) Honda (Touring trim) Acura, Acadia Denali, Buick SUV, Mazda CX5. Laser cruise or adaptive cruise on new Mazda6 sedan. Test Course #1: McAllen, Texas to Franklin, Texas via US281, I37, I410, I35, SH45, SH130, US290, FM973, SH79/190 Test Course #2: Franklin, Texas to McAllen, Texas via SH190/79, US77, SH285, US281 Test Course #3: McAllen, Texas to Laredo, Texas via US83 Test Course #4: Laredo, Texas to McAllen, Texas via US83 Overall miles traveled = +-1,130 Detector Mounting Points: V1: Top left of windshield, slightly to driver's left R3: Top right of windshield, slightly to right of passenger's seat Both detectors were similarly handicapped by the visors being slightly down to shield them from visually alerting other drivers. (Towing the trailer made them invisible to the rear so this was probably unnecessary) Detectors were mounted 44 1/2 inches apart. Detector Configurations: V1: X and K Band off, KA Band On, Laser Alert On, KA Guard On, POP Off, all other settings left as configured from factory. R3: Advanced, X, K, Ka Band 100%, GPS On, Speed Camera On, RLC On, RLC Quiet Ride 60mph, Voice On, KA Frequency On, X Band Off, K and KA Band on, Laser Alert Off, K and KA POP Off, K Filter On, KA Filter Off, TSF On, K Wide, KA segments 2, 4, 5, 6, and 8 on, all others off. KA Priority, All Threat On, Gray Color, Time Display, Speed Display, Auto Mute on set for 30mph, Limit Speed 95mph Form: V1: Blocky and purposeful shape similar to a Mercedes-Benz W140 of the same era, hefty feeling, design looks unchanged after all these years but similar to a Porsche 911 a ton of changes under the skin. R3: Modern yet squarish in some respects, reminds one of an Audi A8. (DFR7 is much more rounded and modern like a 488 Ferrari) Feels light in comparison to the V1 Function: V1: Simple one knob handles the on/off, volume and mute functions. (Hard to use for changing settings) Secondary knob handles mute alert volume, loud and crisp alert tones, great signal meter, fantastic alert ramp up, THE ARROWS WORK GREAT!!!!! My detector does not have TMF and is waaayyy too chatty so it was a no-brainer to shut off K Band all together. (New units are much improved) My biggest knock is having to reach up to mute the detector (Resolved by using an App or the Concealed Display unit) Windshield Mount is simple but very effective. R3: Ability to mute and perform lockouts from power cord is very convenient, volume and menu buttons are hard to reach with my preferred high mount location, display can be hard to see due to smallish size, alerts were loud and audible even over loud music, alert ramp up after initial hits is pretty good, Quiet Ride is heaven sent around town and stop lights, Dark Mode works great by not drawing attention from other motorists wanting to employ you as a rabbit, gets your attention by lighting up once an alert is received, windshield mount needs improvement, black suction cups would not stick and twice I ended up with a dangling unit, (Used some for the V1 lying around and had no issues with them sticking. In all fairness I have not tried the big single suction mount) Performance: V1: At minimum needs a 50% boost in range. On at least 3 occasions it did not alert until 20+ seconds after the R3's initial one, twice it did not alert to 60% or further off-axis radar signals while the R3 did, confronted twice with short range IO radar bursts it reacted faster than the R3. Arrows were extremely helpful in Selma and Kingsville when being targeted from the rear. Only received 1 false laser alert from a new Mazda 6 sedan. R3: Testing shows it's a beast and I confirmed it with first hand experience. Save for 2 occasions out of 21 encounters with LEO KA radar the R3 always alerted before the V1. In 3 instances ridiculously so. Alerts gave plenty of time to let off the gas and slow down while the V1 requires more drastic speed corrective measures at times. Encountered 7 confirmed BSM falses and a few more from door openers and speed signs but nothing drastic. (Quiet Ride and Mute Memory really help) Laser detection is poor and false alerts occur frequently so I left off Laser alerts and let the V1 handle that task. Conclusions: Both detectors have their strengths and weaknesses. IMO the V1 needs more range and the R3 needs an upgraded R7 model with arrows and improved laser detection. I had intended to send in the V1 for an update but this forum piqued my interest in the R3. Thanks to @Vortex @InsipidMonkey I was able to acquire one during the Rakuten $299 Cyber Monday special. So far other than the cheesy mount I like the unit. Not opposed to running my V1 but the R3 is going to be my daily driver until something else comes along. I did not notice any interference between detectors but that doesn't meam it didn't happen. For committing Cardinal Sin #1 of radar detector testing I accept any and all judgements and criticisms.