I for one still use my V3i as my main detector. I also have an AT-Pro, but I only use it as a backup right now.
One thing I can actually say I like about this forum. Whenever you ask a question, someone is willing to provide you with an answer. Not like when I used to belong to the White's forums. You see, the V3i users seem to be a fickle bunch of users. Now don't get me wrong. Whenever I would ask a question about my V3i on the White's forums, I would always receive an answer, but it was something to the effect of, "You just need to put the time in and learn the detector like I did. There are no shortcuts."
When all I might be asking was for a little assistance in pointing me in the right direction. And, if you ever asked for assistance in possibly creating a program or adjusting certain settings, you were immediately shunned like you had the plague or something.
Just my two cents worth.