you`ll both those wheels. The double row is for quick stock removal and the single is for smooth finish. Might also want to look into high grit diamond polishing pads
http://www.citadelfloors.com/index.htm
They have a polmatrix waterproofing gel covers at 200sf/g ($175-200/g)
They can put you in contact with a local installer.
I use it on my installs
It's all about your budget. Gladiator is fine if your in the $1000 range. If your can stretch your budget get Redline for wood or baldhead/lista/moduline for metal. I love big box displays with cabinets that are either damaged or misaligned.