I have been considering a muffler swap. I currently have a Flowmaster Super 44 SISO welded in place of the stock muffler. I really like the aggressive sound and it's not really too loud but it does have pretty good drone in the cab and it also really brings attention to my 4.7 having to downshift and rev higher to maintain speed. So I have been thinking I might like something a little quieter. I found a vid that I like on youtube of a Magnaflow but it's a 22" and I'm afraid it might be too quiet (it's hard to judge from an online video). A little quieter than the Super 44 would be nice but I don't want it as quiet as stock. Any thoughts? Maybe an 18" Maggie? Thanks ahead of time.