I don't have a preferred round. I just shoot whatever was cheapest that will feed.
Sitting in the ammo locker I think I have 3 flavors of 9mm ball: Blazer Brass, Fiochi and Wolf. I've also ran WWB (for those who don't know Winchester White Box, usually from Wally World), S&B.
In the past I've also ran Federal/American Eagle, Reminton/UMC, PMC, Blazer Aluminum etc. I haven't used any of them lately as I haven't found them at cheap enough prices. Except for Blazer Al., it didn't agree with my XD but its fed fine in everything else I've tried it in.
Steelheart