I'm in love with Meisterschaft personally. If I wasn't cheap that's what I would buy. I would check out the GT and GT2 as they have a great sound and I believe a dealer is doing a nice group buy on them.
If you're just looking for a nice rumble and don't want to spend a lot you can always look into doing the OEM exhaust mod. You're not going to pick up any power from a rear section alone. I wouldn't suggest this if you're going to delete cats tho.. not a fan of that sound and the reason I'm switching to Remus cans. Well that and cause I'm cheap lol.