Hi, I decided to reply on your question here. As you know I own the 540s, the plain one in a colour that I describe as wine red, don't know the official colour. The LTD is the better one as far as I know and they are highly valued. It is a very versatile guitar, the stacked single coils eliminates all humming and the humbucker is moderate output, assuming you get the F2 hummbucker and C2 single coils. I've heard the pickups is relabled DiMarzio's but I won't know.

Anything specific you'd like to know?
Ibanez 540S, Randall RG50TC, Blackstar HT-DISTX, Ibanez TS-808