Personally, I've been told and am convinced that a Glock 35 in 40 cal is about the best entry level gun on the market (and I dislike Glocks). You can download the 40 S&W to minor very easily (we call them mouse fart loads) and shoot production with them, or you could attach a mag well, new sights, new trigger mechanism, load to Major power factor, get extended base pads for standard cap mags (in states where legal), do everything you like to it (like the other double stack limited guns, STI, SVI, Para, etc) and have yourself a really nice L10 or Limited gun. What other gun can you effectively shoot in 3 USPSA divisions, at both minor and major than the 35?
The 9mm high power would really only be good in one or two divisions, and it would be very limited in Limited. Limited 10 minor would be about the best division for it. I talked to someone recently who was thinking about using a Sig 226 for IPSC. Again, same problem, the standard cap mags don't hold enough, it could be used for production but it would be at a disadvantage to Glocks due to the first shot double action, then subsequent SA after that.
Don't get me wrong, I use a 229 for Production and do ok with it, but after shooting a G34, there was a big difference. Oh, and firing the 34 for a few months, bumped me up to B class (argh!
with someone else's gun and factory ammo!). You can see how it's hard to hate a "plastic gun".
(I did say I don't like them right?)
Vince
ps.
Edited to add:
If you already have the Daly HP, use it. It's fun to shoot what ya brung and see how you fare. If you shoot all A's, then you have nothing to worry about. If you haven't yet made the investment, go to a few matches (IDPA, Steel, IPSC) and see what people are shooting. A majority of people not shooting the high ticket ZOOT steel guns are shooting the Glocks, some Sigs, H&K USP's, and CZ's and are very effective with them. I know one guy who shoots an H&K P7M8 because he has it.