I know the possible issues with running two detectors at the same time, but I think I got a pretty good baseline, at least on K-band, running them for 4 days for about 400 miles together.
Bad news, no really noteworthy encounters, but on one K-band encounter the Redline came off looking pretty bad, which I've detailed below.
I did about 250 miles of expressway driving, not a single KA band encounter, just a few local LEOs running K-band, and those were just passing in the opposite direction with the exception of a single car shooting I-O K-band at the top of a hill. Both detectors picked the signal up at the same time in that encounter, but it was I-O, not quick trigger, the gun was on for maybe 5 seconds of longer.
The V1 & the Redline pretty much performed equally on K-band, whether cops or door openers.
I had one encounter where I went back later and clocked the distances on my odometer just to be sure, since it was the one encounter where there was a big difference in reception.
I was on a local 4 lane where the speed limit is 35mph for most of the section I was driving. It took me about 1.5 minutes to get to the ultimate source since I was doing the speed limit and watching the detectors. About .8 miles from the radar source(s) the V1 started giving off-again on-again alerts, weak, signal strength = 1. The Redline was silent. At about .5 miles from the source(s) the V1 was up to signal strength = 2, consistent chirps, Redline still silent. This went on until I was about .2 miles from the source, then the Redline came alive. I had gone at least 1/2 mile, about a minute in time, with not a single peep from the Redline.
The source ultimately turned out to be a group of police cars traveling together. The V1 showed 4 sources by the end of the encounter, and the Redline gave a verbal alert to multiple sources, right toward the end.
Basically the Redline acted like it was dead, until very close to the source. The weird thing is that about 1/2 mile further down the road there were some businesses with K-band door openers, and the Redline alerted in the usual place on those, about the same time as the V1. This was on Fri night, on Sunday the wife and I took about a 150 mile round trip up on an expressway, and the V1 usually alerted before V1 on K-band by a few seconds. It was just the one encounter Fri night where the Redline was silent right up almost to the end.
I like the Redline ok, but unless something drastic happens I'm probably sending it back and keeping the V1. The V1 came through bigtime on my trip to Charleston a couple of weeks ago. I wish I had had the Redline at the time to compare since there were multiple KA-band speed traps on the trip and it would have been nice to see how the Redline would have done on those.