"nicer case" is subjective, although I will agree that official Apple models do have far better support and far better resale value.

That said, I don't think the average Hackintosher really cares about those things -- there's a reason why "hack" is in the name. It's a hacky and fun way to get OS X running on unofficially supported hardware, and I don't think support and resale value are high on a Hackintosher's priority list.