I've only had my Sport Premium 2 days but so far I'm really liking it. It is way more fun to drive than the F-150 (4x4 extended cab and long box) that I am coming from. I've not noticed any issues with shifting into reverse yet, but that could be because I keep thinking it's left and up instead of right and down (must be muscle memory from when I drove my ex-wife's 5spd Jetta). All in all the manual transmission is a lot of fun.
My only "complaint" is that the clutch is so incredibly light. And the 4000 rpm limit for the first 1000 miles. Every time I get close to that I can almost hear the engine saying "more...more..." At mile 1000.1 it's going to be like getting a huge free HP increase.