The Razer Blade looks cool, I'll admit! It has a good video card and that track-pad thing is just kriffing awesome! HOWEVER, there are two MAJOR flaws in the way that laptop is designed and distributed:
1. The laptop is roughly the same size and shape of a MacBook Pro, so it's thin.... too thin. Under full load, that laptop will heat up like an oven! The M14x is much larger and has muuuuuch better cooling, and that still gets uncomfortably hot at full load!
2. The price: for that much you could by a M17x R3 that would out-perform that laptop by a lot! The video card that it houses is good, don't get me wrong, but you can get a much better one in an M17x R3 or an M18x than in the Razer Blade.
So yeah, if you don't mind the price and the performance and the heat levels then by all means, go for it!