A friend of mine recently purchased a v1 off ebay the unit looks basicly new and seem's to work fine. When I go into valentine's site and type in the serial # it say's the detector has pop1 and can be upgraded to the latest pop2 version for a fee, however i have been doing a little searching through this forum and it seems that a couple people have had problems with the latest version something to do with the J/junkmode feature. I quess my question to everyone with the v1 is, do you think it is really worth it to upgrade to the latest pop2 version? I would greatly appreciate your input thanks!!