BAT, ARC, VAC, Shindo?

I am doubtful you will find anything better. Different for sure.

My money's on you regretting making a change, if you make one.

Just for kicks, you might research the Juicy Music Peach preamp. I took delivery of a used one today. Cost under $800. Boy, it's silly good. Mated with a pair of reasonably priced tube monoblocks, the combo with the Silverbacks could be killer.

But...not necessarily better than what you have. Only different.

ARC is always a good choice because you can always get it serviced or upgraded as you move into the future. VAC and BAT has simlilar reputations, but have not been in business nearly as long and have not had to weather as many storms. It will be interesting to see how many High End companies fold if the recession drags out.

I went from the VAC Avatar SE to Auricle MB70s. I use a Rowland Capri with the MB70s. I have to say I prefer the MB70s/Capri combo but as Tvad said its a different sound, not necessarily better.

If you like the VAC sound and your Super has HT bypass you might want to pick up a VAC preamp. You can run it through the Super's HT bypass to see how they sound together. If you like it you may want to seek out some VAC KT-88 monoblocks.