Good Muffler For Dual Exhaust

[SSSilverado23]

I was looking at a few different mufflers for when i do my Dual Exhaust and was wondering which Muffler is the best all around muffler for performance? I have an 8.1L engine. Thanks for the help!

 

reason i ask is i was looking at these kits that give you options on muffler. Not even sure if the kits are worth it?

 

http://www.ebay.com/itm/99-08-Chevrolet-GMC-Truck-Dual-Exhaust-w-MagnaFlow-/140843285874?pt=Motors_Car_Truck_Parts_Accessories&fits=Year%3A2006%7CModel%3ASilverado+3500%7CMake%3AChevrolet%7CEngine+-+Liter_Display%3A8.1L&hash=item20cae9fd72&vxp=mtr#ht_2955wt_1245

[BlackZ71Silverado]

Magnaflow..............Can't go wrong on sound or performance.

[11Silvy]

+1 on Magnaflow. For the price, it's awesome. Great sound and durability.