Well, my biggest concern is the fragile quality of the foam, it is terrible, I get coolers from Omaha Steaks that are better quality. I have a HURC 2410-12D motor with a 30A esc, so I am not too concerned about weight, but I am not the most gentle flyer. If you sneeze on this stuff, it falls apart. I was looking at a build done here http://www.rcgroups.com/forums/showthread.php?t=314050
that was very impressive. I would feel much more confident in taking this out with FG on it.