f4 vs ace 250 , etc. thinking of getting a detector, but would like any thoughts on the f4, 250, silver umax, or anything in the mid range. i currently have a rs landstar, tracker IV, which i like. i had a 3300 and it seemed to be a good detector, but battery life was awful. maybe i don't need to upgrade at all, but you all know how this sickness is, to try more detectors.
thanks
thanks