I owned a 2011 GMC Sierra. It was good truck but it had some minor things which constantly bugged me, low ground clearance being a big one. In fact I almost bought a F150 when I was originally truck shopping but the Ford dealer was a dink. I had the Sierra for 2.5 years, but it was getting to the point where it was still good but slowly irritating me.
When I test drove a Ford, I was impressed and after a week of owning it, I'm even more impressed. Enormous back seat, lots of ground clearance especially with the leveling kit, next to no wind noise at highway speeds, smooth ride, great handling, loads of power and good fuel economy.
I think I found the truck I'll keep for a long time.