I haven't been able to use my rd alot (since I live in VA) until this week in NC. Been cop chasing and found out a few things...
1) we all know that sounds sucks, but that can be fixed by sending it in.
2) it has decent range on K and X band. I picked up K band a little over 1/2 mile (not great by the big 3 standards, but enough time to slow down, even if you are speeding WAY too fast for anyone). X was a little better at about 8 tenths of a mile
3) It falsed alot (actually not falsed, real signals, just from doors). Going on I-95 through Johnston county (smithfield, nc) it falsed alot even though the 'doors' were two streets over.
4) I didn't get hit with laser on this trip or Ka. It seems that NC doesn't use alot of Ka. I got his a couple of weeks ago with Ka, but I was getting onto the interstate right where the cop was. So I ddin't get a real good test. But it was about 2 tenths of a mile.
Over all, for $100 (when on sale) it isn't bad. I don't think that I would pay $200 for it though.
NOTE: NC is having a crack down on the major interstates this month. Tons of police are out scouting for speeders.