I have a Colt and really enjoy using it. Plunge and fixed bases and phenominal edge guide as well. If I had it to do over again, I'd consider the Makita pretty carefully. Although many people here like their DeWalt routers, I don't like its raising and lowering mechanism very much. Personal preference comes into play. If you can, go and feel the different routers because the best thing about the little routers is how nice they are to work with freehand. I feel far more in control with my trim router for doing simple tasks. Hinge mortises are a breeze for example, and there is an extended base with twin handles that with the plunge base makes sign making easier...that attachment is available for most name brand trim routers. Not familiar with the Ridgid, but they seem to make some really fine tools, so I'd check that out too. But in general, if it's a choice between Bosch and something else, well Bosch has earned my trust.
The more I do, the less I accomplish.