>>277743494
>is there any reason to use 1.6.x other than the 90 and 360 modes?
Not really, you can revert back to 1.6 or 1.5 and use all mods. Your highscores etc won't show up on the leaderboard though, if you care about that at all.

These are the ones I use but I haven't bothered updating since I haven't played in a while.