if you bought it for the 360....you made a great choice as the patch just came out and made the game significantly better.
as for sliders.....the most popular sets are from original 6 and venom. I use my own , and I think that each should have their own.
The most important things you want to do is to lower checking effectiveness on both sides I have mine at 20/100 for both me and cpu.
Also, you want to mess around with the tendency sliders for the cpu.
put shot tendency at 0 ( way too shot happy on default)
pass tendency 80
dump tendency 80
those are IMO the most important ones....the other sliders you will change according to your style of play.