I have a Prizm V, and have had pretty good luck with it. While the multitone can be a little bit much, its useful at times and also can be turned off if the user would like to detect in a fewer tone mode.
Having just gotten this for X-mas, I've only had a few times out. But each and every time, I've not packed it up empty handed. Always have come away with coins, even though I've mostly just md'd front and back yards.
Found a silver ring basically the first time out - I've already posted that one on the finds board.
I think the Prizm V is a great starting MD, very accurate at pinpointing and with the larger coil, the depth is pretty darn good.