I made a lot of 9mm with Power Pistol and then transitioned to Hodgdon Universal. Other folks like Bullseye and Titegroup. Personally... Titegroup simply isn't for me and I pretty much avoid that stuff these days.
Unique has been popular for 9mm for a long time, but it meters too poorly for my tastes. W231 and Accurate #2 or #5 would also be good choices.
I'm sticking with Universal now, because it seems to run my Witness Match incredibly well with 125gr LRN.
Attention Brass rats and other reloaders: I really need .327 Federal Magnum brass, no lot size too small. Tell me what caliber you need and I'll see what I have to swap. PM me and we'll discuss.