Fender makes a really light weight hard case (the Elite case) and IMO its the best hard case I've ever come across
It will hold an RG and other shapes no problem. Its $60 cheaper than the similar Ibanez one and the exact same quality. I'd highly recommend it. The Gator one looks decent but personally I'm not a big fan of the shape or the latches on it. The nice thing about this Fender one as well is the guitar neck blocks off the storage compartment so if you're ever having to move the guitar around all the stuff you store in there won't fall out.