1)second one,
2) seems more upbeat and some better sounding sounds,
3)no as it strikes me as boring and very repeated almost like its annoying.
4) very appealing with good sounds and a joy to listen to, used abit but will go out of fashion
here you go bud, not sure if its enough detail for you, give us a pm if not, and did not really get question 4 as not very up to date with music lol