Yeah, soundwise, it is top of the notch, totally feel you!
You were right with the Nachtdigital festival, I think it is fun with great lineup but more hip than hippieish.
Fuchsbau is completly different, it is a lot more about performance and experimental music. They always got a lineup where you might only know two names. It is a quite young audience and I think it is only really cool if you got a big crew. Has its moments though :)
Wurzelfestival got amazing sound as well! They have this thing called the bunker, with a 3x8m subwoover wall, it is insane. The DJ table has to be a massive concrete block, so the vinyls dont jump :D earplugs advised. The feeling you get in there is crazy. You can take some sand in our hand and watch it move from the bass. I love the atmosphere and people, I felt really safe and everyone was so friendly. Been there two times so far, it is a really young festival.
Definetely on my list for this year :) sadly didnt get any fusion ticket yet... What about you?