On most boards this will cause a week-long arguement.

That said, I use a 3 year old PassPort 8500 (pre-VG2 modded). I can't imagine a better unit out there.
The newest (and most expensive) Bel seems to be a nice piece. If my Escort ever gives up the ghost, I'll have one of these on my windshield.

IMO, V1s are gimmicky and old school. Period.