Wood routing suggestion

I was thinking about buying a Rotozip with plunge router attachment and i was wondering anyone has had any experience with these.if so what kind of routing bit would be ideal for say routing out wood to fit sanwa buttons. If the rotozip isnt a good option, what would be the cheapest option to getting a peice of wood routed? Any suggestion would be greatly appreciated!

Ryobi makes a decent router for like $60. If you are removing a fair amount of wood it may be hard on the little rotozip motor.