if you want something with a shallow rim the XD is a good choice... they seem interchangable with a classic roc, though, so it may not be what you're looking for. i think polecats also have shallower rims than most. wizards, aviars, magnets, putt'rs etc... are those too deep for you?
the wizard plastics are awsome, the "soft" S plastic is still just as rigid as a pro D challenger (and more than DX plastic), the medium is a little stiffer still, and i haven't tried the firm yet. E wizards feel like old CE plastic (mmmmm) and are gummier than S wizards. wizards are slightly overstable on putts... like a big bead aviar.
i say stick to the classic roc, or try an XD if you need a shallow rim. otherwise, wizards are great... but there's a bunch of different putters that work equally well within' 40'... it's a matter of plastic preference, how it feels in your hand, and if you can get 5 for $35 shipped to your door