don't bother with the original, you cannot set the difficulty, after you get some notes right, it bumps the difficulty, and you can't lower it as far as I can tell. 2014 is so much better, plus for like 10 bucks you can get nearly all RS1 songs imported anyways!
I liked the first one, it keeps pushing you and wasn't too hard. But then I also play guitar already. If the second one has selectable difficulties, it might be the better option so you can go at your own pace though.
Please let old threads die and do not reply to them unless you feel you have something new and valuable to contribute that absolutely must be added to make the discussion complete.
Otherwise, please post a new thread in this forum instead.