I just purchased my first metal detector May 24th 2013, it is a Garrett AT Pro. I did TONS of research on ALL of the metal detectors I could research, and came away with the AT Pro, figured I could learn it well enough given enough time, I've always wanted to metal detect all my life, but only started after recently retiring. I'm glad I got the AT Pro, I'm learning on a somewhat better machine than I would be had I started with an ACE series, and when I decide to get a better/deeper detector, and I will, I will have a darn good "Spare/Extra" detector.
I felt pretty certain that I was going to love the hobby, and I do, I've been out digging almost every day since and learning the language of my machine, and after reading many people saying that you have to learn the language I have come to know that is true, it really is like learning a new language, and I love it. It's more interesting each day. Just wish I'd find a Merc or a bit of silver but I'm still early in the game.
I'm not saying everyone should get an AT Pro or similar above entry level detector for their first, but for myself, having a very good idea I'd love the hobby as I've always wanted to do it, I felt safe in spending the money and figured if I didn't like it, I could sell it. Of course the fact that it is waterproof and I am in Oregon had much to do with my decision as well. I think I'd wind up being bored with a simpler machine at this point. HH