Hi Timon, The first things you need to decide are
1.What are you going to use your router for, edge treatment, Molding, Panel and door making, or all of the above
2. Are you going to use the router handheld, in a table or both.
Your decision affects Power requirements and Plunge or Fixed base, single speed or multi speed.
Any of the large router bits should only be used in a table and would require variable speed as a single speed router runs to fast to safely rout with those bits.
I currently have a Porter Cable 3 1/4 hp fixed, Freud FT2000E 3 1/4 hp Plunge and a Bosch 2 1/4 Plunge any of these routers I would recommend
Hope this helps
Paul