Buzz, if at all possible, try to find a dealer w/one in stock. Here in Phoenix, I couldn't. The only "DAO" that's popular here is the big G. The DA pull of the standard DA/SA is somewhat heavier than my pistol, but not nearly as smooth. The extra lockwork needed maybe? Anyhow, when my dealer called Davidson's, they had five DAO's and over 2,000 regular models. Gives you some indication, eh?
Spare 8-rd mags were in stock at two dealers for only $25 ea. Doesn't get much more reasonable than that. The only mod I did was to "stipple" the front and rear straps to make it less slippery. Did this outside and well ventilated, as the frame is supposedly a fiberglass/resin compound. Did not show any "fibers" at all, though. No probs have surfaced. Hope this helps.