I bought summit turbo mufflers, I love how they sound. Nice and low, not obnoxiously loud, but sounds mean when you rev. They're about $30 and you can look from one outlet to the other so you know it's not very restrictive. Also how much do you plan to use the truck? If it's a daily driver you may not wanna go to loud with your exhaust. Can't listen to music or talk with your girlfriend if your truck is screaming like a banshee from hell. Also I think it's good to be able to hear all the various noises your truck makes, kinda hard to catch a ticking lifter if your truck is to loud. But ultimately up to you, I had glass packs on my truck for awhile, first I thought they were awesome, then I changed my mind.