I use what ever is cheapest, usually Turtle or Mothers.
I used to manage a couple of ACE HW stores so I had an opertunity to try several different brands on the cheap. None of them seem to work or last any longer than another nor did they harm the graphics.
The only one I would never use again is ICE. It left an oily residue behind that was tough to get rid of. Others seem to really like the stuff.
YMMV.