Mac G is the only way to go! Wether you like diamond plate or not, it is made of the thickest material out there and I can easily lift the bike on my lift. Paint it or have it powder coated... you only have to do the sides. No heat issues for me. There have been a few folks that have had their oil filter punctured by an object and the water bottle is under there as well. I did not paint mine and you can barley see it.
Your call... Opinions vary!!!