I've only used Ultracote, only becaue that what my ARF's came with. Is there a big diffrence in all these ? One thing that really annoys me is placing Ultracote over Ultracote. I put a checkerboard ultracote over the bottom of my red ultracote wing. It does not look good with all sorts of little bubbles. I made lots of holes to let the air out and pin *****ed others but I'll be there till christmas by the time I get them all !! Does monocote have the same problem ?