I still like Motiv Power Gel Clean. Big quantity for the money and it does a fine job of keeping the cover clean and the oil out. I also use a shammy between shots, and that's the biggest factor for preventing oil saturation, but no complaints about the Power Gel Clean at all.
I've used the Power Gel Scuff in the past as well but now if I want to maintain surface I just do it by hand or on the spinner.