Actually there are a bunch of other small removers that work great and I use those more as 'specialized' removers if the main ones don't work.
http://www.spywareinfo.com/~merijn/downloads.html
This site has a ton of other utilities that the 3 listed may not "fully" remove.
I think in all using a bunch of apps to get rid of the infestations suck but there are alot of utilities out there that can help clean the samll pesky things that the 3 major ones can't.
but in all if you can clean it with the main onse stay with them.