Thanks for the info!
I'd agree the router seems like the tool of choice for this type of thing. For myself, I dont really have any tools apart from the standard stuff (jigsaw, circle saw, drill) and the rotary saw might fill a few different roles even if it does cost a bit more than just the regular router.
No one carries the plunge router attachment for the dremel saw yet tho, so I suppose if its $50 might as well just get a router.
Brian