NO kits build like an Xray. They are a pure joy to assemble, and if it's your first kit, you don't want to be hand fitting parts, dealing with missing fasteners, etc. Mugen would me my next recommendation. That said, I just build a Rc8.2, and it is really nice as well. I don't have any experience with the others (LRP, Agama, etc), but I know what works. Whatever you choose, take your time building and I'm sure you'll like the results.
Cheers!