I have a Forrest set that is great, and picked up a Freud 8" set on sale that works almost as good. I got the Freud because I was doing a lot of dado's with a RAS, and thought it would be a bit less likely to self feed, but it isn't.
When doing a lot of dados on melamine particle board for closet shelf units, I used an old Sears wobble like the one above in Bob Vaughn's post, to avoid damage to my good sets. When sharp, it worked well, and the slightly rounded bottoms were minor, with a very small amount of melamine chip out. I was pretty pleased with how well it worked, but wouldn't use it for furniture.
I never noticed how narrow a slot it would make. Gotta check it out.
PS: For melamine shelving I did try a router, using a Woodline slanted edge straight bit. Wow, did that bit go dull fast. One shot across a 4' sheet, and I could tell it was going dull. It would probably be fine in real wood.
Rick Potter
DIY journeyman,
FWW wannabe.
AKA Village Idiot.