My prediction for this thread is you will see the usual suspects...... :rolleyes:
1) Many will come in and say that they love the V1 and its the best.
2)Then some will come back and say no, Escort/Passport rock. They will argue about the stupidity/Validity of radartest.com and C&D reviews.
3) A few stragglers will tell you to buy a cheep $90 Cobra or Bell.
4) The preachers will show up and tell you not to speed in the first place, so you don't need one.
In the end, no-one is right or wrong, as its all a matter of opinion. You will ultimately decide on your personal detector.
That being said, I am a user/believer of the V1 and think radartest.com is worthless.

:p
Edit: Just re-read and saw the Detector OR Jammer. Detecter all the way, like it was said, Jammers are either worthless or illegal.