Well I know this topic has been covered but with as many people that have done it there aren't many videos out there of our trucks with after market mufflers. Also this will give anyone else an idea of what the truck sounds like before they decide.
SO, I had a Flowmaster 40 series which is this part
40 Series 3.00"/2.50" C/DUAL [430402] : Flowmaster Inc. Exhaust Shop, Love That Sound! , and I had that on my truck for about 6 months.
YouTube - 2006 Toyota Tundra V8 with 40 Series Flowmaster
But I wanted something that didn't sound so raspy when the truck was above 2500 RPMs. So the reason I decided to go with the 18 inch Magnaflow
MagnaFlow Performance Exhaust Part #12278 was because is has more of a "throaty" sound, and a just better overall sound. I am very happy with the Magnaflow now. Enjoy!
YouTube - 2006 Toyota Tundra V8 with 18 inch Magnaflow