I'd have to second (or third) the sentiment on the dado on the RAS. It's so much easier and more accurate on the RAS.
I've got the Ridgid RAS and a Delta 10" CMS. Between those two I could never foresee the need for a SCMS. If you've already got the RAS and don't have a portability need for the slider, you could save some bucks by going with the CMS.
\"Last year we couldn\'t win at home.<BR>This year we can\'t win on the road.<BR>My failure as a coach is that I <BR>can\'t think of anyplace else to play.\"<BR> - Coach Harry Neale, Canucks