Oh man, I hate F. Hate it. Coming from a piano background, where the notes are almost always the same distance apart no matter what key you're in, the guitar gave me fits. But with some practice, I was able to learn the dreaded barre F. Since I don't play guitar everyday (I'm fiddling now!), it's still a little plunky sounding, but it's way better than it was when I started. And since I've been playing the fiddle, the guitar makes a lot more sense.

The only thing about strings, though, is that I've pretty much had to give up my favorite singing key: Bb. That is, at least until I learn second position!!!!