This entire major vs minor discussion is kind of academic for me, because I don't have a rig to shoot major remotely competitively. Like... the only pistols I've got in major are .45ACP, and they're a semi-modern 1911 and a double-stack sub-compact 1911 (BUL M5 Ultra). I guess I could theoretically shoot it with the latter if I had a holster for it, but let's be real, it would not end well compared to all the dudes with Glock 35s, nevermind real race guns.
So, I'm stuck with 9mm either way. It devolves into whether I want to shoot Production or Limited Minor right now. Maybe I'll try CO later, though.
I didn't see your question that way. More like you were asking if you should shoot production (10 rounds, 5-6 mags) or limited minor (23 rounds, 3 mags). Either will be fun, and more rounds downrange than idpa. Hell, come down this fall for the SMPS monster match (with 50 round stages) and throw a TON of lead downrange. You'll want to fill every mag you can carry,