I'd look into when the latest versions of these detectors
were released / what's the latest firmware available (the V1
can be reprogrammed).
I own a V1 and it kinda worries me that all the development
for it in the last 6 months was the appearance of a plastic
carrying case... and there's no new firmware in a long-long
while (I gotta check it out now though).
Mike seems to have been slowing down.
Other than that, I'm mostly satisfied with the V1. A year
ago it was definitely the best I could get for my money.
T.
