I'm usually a DI into Ownhammer guy, but man Guidorist studio profiles are amazing !
Got XTC and Dual Rec. Needles to say I bought VH4 and PT20 an hour later. 
I think what sets them apart from many others is that he's a serious guitar player that knows how to dial in an amp. And I tried gigging with a lot of well known profiles.
Just my 2 cents, Guidorist rocks 