First of all, nice system. Secondly, I don't think you could go wrong with either of the tube preamps you're considering.
I owned the SLP-05 and it is a very special preamp IMO. I've spent time with the VTL and it too is very good. This is one of those instances, like most - where you need to audition both if at all possible.
I'm really splitting hairs here but I'd say the Cary leans a slight bit warmer than the VTL without being overly tubey or bloated sounding. I think you will get a bit more of the tube magic you're looking for with the Cary than the VTL, but like I said - both are really outstanding units.
I owned the SLP-05 and it is a very special preamp IMO. I've spent time with the VTL and it too is very good. This is one of those instances, like most - where you need to audition both if at all possible.
I'm really splitting hairs here but I'd say the Cary leans a slight bit warmer than the VTL without being overly tubey or bloated sounding. I think you will get a bit more of the tube magic you're looking for with the Cary than the VTL, but like I said - both are really outstanding units.