Summer is upon us, I have money to spend! So figured I may as well invest it properly, but I'd love to get some advice because I honestly have no idea where to start. My idea right now is wait a bit longer till Apple refreshes the iMac line first, purely because I feel comfortable using OS X, although building a windows box would be far more powerful, so a bit of a trade off. If it's of any importance, I primarily use Ableton. -21.5" iMac (With about 32GB of ram crammed in that I still have laying around.) -Pair of KRK Rokit 8's ....And this is the part where I'm stuck, I have absolutely no idea which Audio Interface to get, and maybe a decent keyboard to go with it or what else would be a smart idea. Budget would be around 2500 Euros, any help would be appreciated .