Maybe it's just typical buyer's remorse, but I'm not convinced the ASUS was a good deal. I've read most of the threads on this particular comparison, and most seem to point to the Y510p as the better performer. Can anyone speak to differences in build quality, real-world battery life (I imagine it's pretty poor with the SLI), or general performance? I have a 7200 rpm HDD to replace the 5400 the ASUS ships with, but is the hybrid drive worthwhile? Waiting an extra few seconds to wake from hibernate isn't a big deal to me.
As far as the hard drives go my Lenovo has a 5400 RPM hard drive but with the SSD cache you don't really notice the slow load times. Hybrid drives aren't really worth it from my experience. If you're going to get an SSD get the real thing or don't get one. Samsung makes a 1TB SSD but it's ridiculously expensive right now.