I was planning on buying a guitar app, for quick practice when I am not near a guitar. I've decided on either Guitarist or Pocket Guitar (not surprising?) Anyway, I want to know which is better. Not more feature-packed or anything, Im looking more for realism when playing. I've heard good things about both, and I can't decide. (Im concentrating more on the fretboard section of each app, so even though guitarist also has cool features, don't count them in your reviews. Thanks!