Well I'm a big fan of Mike Sanders' Quicksilver gear. Damn fine gear on every level, and the man knows what he is doing. Hand built, point-to-point wiring and overbuilt in every respect. I've owned four different pairs of Quicksilver amps and currently still own two. Love his amps and the one's I've had would all be a step up from the Jolida I owned. Still, for the money the Jolida is hard to beat if you are on a budget. A step up might be Quicksilver Mini-mites paired off with a Quicksilver Line Stage. On the used market that combination can be had for around $1100-1300. With the right speakers you may be very happy with that combination. The music you mentioned that you listen to would be well suited to a push/pull design like the MM's. I don't know how efficient those speakers you mentioned are, but I'd look for something around 92db or more for the MM's. Don't know how big your room is, or how loud you like to listen so you may want to provide that info to get more specific recomendations from others. I don't know VTL so cannot comment. I do recall a friend who had them mentioned his were biased pretty hot so may go through tubes faster and he said that they required hand-picked tubes to run best (I think he said his EL34's were supposed to run at 300ma if I recall correctly). You may want to ask VTL owners about that aspect of it. He did also say that he loved the sound of his VTL's (I think he had the dual mono 100's(?) and was pushing Martin Logan's with them). I never got to hear his rig, so again, cannot comment beyond that.
Marco
Marco