Best muffler for a 6.0L 2006 1500HD

[chevy_69_chevelle]

I have a 2006 GMC Sierra 1500HD with the 6.0L engine.

 

The exhaust system is different than the 5.3L engine in the standard 1500s.

 

The muffler on mine has 2 inlets and one outlet, while the standard 5.3Ls have 1 inlet / 1 outlet.

 

I listened to a 2chamber flowmaster on a 5.3L yesterday, but EVERYONE has flowmasters.

 

What other mufflers give good sound and do not have that "popping" sound when letting off the gas?

 

I was thinking a borla, but haven't heard one on a sierra yet.

 

Any suggestions (sound files of exhausts would be cool, so I can hear what they look like)

 

Thanks.

[gave20]

The Borla exhaust has sound clips of denali's which is a 6.0L. They are expense though, magnaflow makes a good exhaust which is cheaper and has little renascence.