The big question is: what's your budget? If it's unlimited and you're not sure what types of projects you'll tackle, DeWalt's 3-base DW618 kit is a great way to go. You get a 2.25HP motor, a fixed base, a plunge-base, and a D-handle base. Unfortunately, they don't make a kit that includes the D-handle base and the plunge base as far as I know.
That said, I find that much of my routing is done hand-held (e.g. cutting slots for T-molding, round-overs, template routing). For those tasks, I prefer a small (e.g. 1.5HP) D-handle router. It's much lighter and much easier to control than the 2.25HP Bosch 1617EVSPK that was my first router purchase. I generally prefer a D-handle fixed-base to the traditional two-knob fixed-base. I feel that it gives better control and having the switch at your finger-tips makes for safer operation.