NBA, NFl, NHL and MLB

I'll be getting NBA 2K7 on PS3 soon and I was just wondering if anybody could recommend a good team to play as. I've heard Miami Heat are good? The same goes with NFL, NHL and MLB. Could anyone recommend a good team with those sports. I got in late last night and managed to wach a bit of New York Mets vs St Louis. Cardinals and I did enjoy the bit I watched. So if anyone could recommend any teams to play as that would be great.

Thanks In Advance

Sabres! Yankees!