I have a P228, and I routinely use either the Blazer Brass or the regular Blazer, and they work great. But the great thing about the P228 is that it feeds & shoots well with everything you load it with.
I have tried the S&B, and the Fiocchi, a lot of UMCs, the regular Win WB and the VP Whitebox. If I had to choose one ammo that it probably shoots a little better than the rest, it would probably be the Federal American Eagles, which I think is really excellent stuff regardless of caliber.