Most people on this forum are going to tell you to get something in the AR series when you pit it against a SIG rifle. Sure, it looks awesome, but you really can't argue with the mountains of aftermarket parts that can go with an AR. From personal experience, I can tell you it's very frustrating to go shopping for parts and find out all the cool stuff was made for AR type models. And having owned both a P-90 and a SIG 552 now, I can tell you that you'll waste tons of money buying specific parts and magazines if you ever decide that you hate high caps (which are disgusting). I detest how bland AR type weapons are, and it shocks me that people keep buying them, but I'll admit that when I had an M4, I enjoyed being able to buy piles of mags for it for cheap.
This message was brought to you by Umbrella Inc.