I've got to disagree with Doug this time. I like the Last brushes better. They just seem to work well for me.
Also, one thing I have learned is that on old shitty-looking records, after using the Groovmaster and sink, is that the VPI brush and fluid works pretty good.
I only do this to records that are really nasty. While I usually wont buy them, occasionally some pinhead on ebay will "exaggerate" an lp's condition. So, I VPI them before using the RR stuff. It's kind of soapy, and I'd never use it for a final clean, but it does seem to help.
So, Fx, just wanted to toss this out there to further help you clean up your act!