Dan...yes. I have yet to hear mine go off in POP, (maybe it has and it offers the same warnings for the different bands) so I can't say what the sound is.
A bit more on POP detection from the Valentine site...
"Valentine One has full-time POP™ Protection. Just plug in, light up, and you’re covered. Why should it be any other way?
It shouldn’t. But certain famous brands have “Selectable POP.” It’s a special operating mode you must activate. Otherwise you’re not POP protected.
There’s only one reason for Selectable POP—the “famous brands” company doesn’t have the technology to make a full-time feature you can live with. Why? Because those detectors poorly distinguish real radar from a thicket of false alarms. So they give you “Selectable POP.” Use it if you can stand it.
V1’s warning range on POP is beyond the others, too. They trim back warning range on POP to reduce false alarms. V1’s superior engineering gives range on POP that’s beyond them, and beyond line of sight.
The “famous brands” cover only Ka band, too. V1 provides coverage beyond Ka—specifically the MPH Industries models Enforcer™ (K and Ka) and the BEE™ III (Ka).
Probably you’ve noticed that many other detectors create false alarms that set off your detector. Hundreds of thousands of badly engineered detectors from BEL®, Cobra®, Radio Shack® and Uniden® spew local oscillator harmonics that are very similar in character to the POP burst used by MPH Industries. Ordinary detectors aren’t clever enough to reliably distinguish between them."
It's your own decision, and as PatentLaw says...this is just my 2 cents as well. The V1 is the only unit with arrows to let you know where the threats are coming from...very helpful. The V1 is built inside a magnesium case, not plastic.
FYI...I have read on some sites that the POP being left on in the RX65 causes lots of falses.
Furthermore, I have read on some sites that POP is in such infrequent use that it's not really much of a threat. Again, as I understand it...they can't write citations on POP anyhow...so they would have to use regular radar on cars ahead of you...and you would her that.
In closing this rather lengthy post...I can say that only V1s can be update by the maker at a reasonable cost if indeed technology changes...which it will. Mike Valentine is a bit of a nut when it comes wo keep ing his product at the forefront.