For any serious project I wind up with half inch bits. I have a couple of door sets from Sommerfeld that have half inch shanks that are matched so once you position the first bit in the set, you can just drop in the rest without worrying about height, called matched sets. I have three routers with half inch collets, although they each could take a 1/4 inch shank with an adapter.
My quarter inch router is a Bosch Colt, which is a wonderful little router for trimming, installing hinges, doing a quick roundover of 1/4 to 3/8ths max. It is also good for making signs and other freehand projects where control is more important than power. Any bit more than about an inch or so width cutting edge should have a half inch shank.
The good news is that if you get a Bosch 1617, you can do everything a quarter inch model will do. It will cost you a little more to get the EVSPK kit with fixed and plunge base, but you will spend close to that amount for a fully equipped Colt, Makita or Dewalt-quarter inch, especially if you buy it piece by piece. The Bosch also works in a table using its fixed base. A 1/4 router can't do that.
Hope this is helpful.
The more I do, the less I accomplish.