For anyone who has used the Ace 400 or AT Pro and also uses the Apex, how would you compare the Pro in terms of depth, separation, recovery, etc. with the Apex. I currently own both and am happy with the Pro but disappointed with the 400 due to the fact that it falses a lot. Is that an issue with the Apex? My Pro is 8 years old and I want something newer. Would I be improving myself with the Apex? I know the Apex is multi-frequency which I would like with my next detector. I have primarily hunted parks and schools and most likely will continue to do so. I’ve watched numerous videos on the Apex and several other detectors of different brands. I like my Pro but would like to get a little more depth. Being submersible is not an issue. What are your thoughts?