No, there is no difference with performance with the SR one from AM or the BBK. I have a BBK one and I honestly hate it. It's crap. Cheaply made and it flakes. The cheap one I have on my GT and I have no complaints.
Aftermarket CAI are not worth over $100 new. Its unfortunate but true. You get the same gains from sticking a K&N filter on and leaving it a SRI. It's just not as pretty.