What are some must have mods? Hi guys, I've had kerbal for almost a year now and rarely get chance to play due to work and stuff, but when I do so far i've only used the basic stock game. I've never really looked into any of the mods because im afraid of downloading something which could ruin the game!

What are some of the best mods to download that add to the game? I dont really want anything that does autopilot type things as i'm having fun trying to master it manually! (even though i can only make it to mün so far!)

Thanks :)