FMJ in my opinion hands down. If you have to shoot plated, PLEASE stay away from Berry's Bullets, I have had nothing but trouble with them.
Contrary opinion... I've had nothing but good luck with Berry's in 9mm (115, 124 and 147 grain), .357 (158 gr. mild loads) and .38 special (125 grain) and they are quite a bit cheaper than FMJ. 115 grain plated is about all I shoot in 9mm and they are extremely clean and easy on the barrel. 4.1 grains of AA#2, 4.7 grains of Titegroup or 5.3 grains of Unique cycle both my Ruger P95 and my Hi-Point carbine just fine.