If I was buying my first, or just adding to the several I have, I would buy something about the size and weight of the average 1 1/2 = 1 3/4 hp for overall use including for table use. If you can find more power in the same size, great. My 2 favorites are the PC 690 and the Bosch of the comparative power. Don't know the model number off the top of my head. They will do 95% of the work most people need to do. They just seem "right" sized.
The big routers like the PC 7518 3hp+ (true hp is about 1 1/2) have their place, but if I was serious about using bigger cutters like panel raisers I would get a shaper. I see a lot of good/great deals on craigslist. forget anything that runs on 110v. Cutters are a bit more, but you won't be buying expensive router lifts, building router cabinets... but that is a whole different story.