I also have the Vandy-2sig's and am using a McCormack DNA225, which I find to be a good match. Prior to the McCormack I had a ARC VT-60 (50 tube wpc) which I enjoyed but had limited capability to control the speakers at moderate to high volume levels. At lower levels and with Jazz, female vocals, it was great.
You should consider a Vandy 2WQ Sub, which will improve system performance. I added mine while I had the VT-60 and it was a significant improvement. I lived with that set-up for quite a while and then decided to try the McCormack. I had both amps in my system for about 3 months and ultimately chose the McCormack for it's comparitively effortless control and greater dynamic presentation.
You should consider a Vandy 2WQ Sub, which will improve system performance. I added mine while I had the VT-60 and it was a significant improvement. I lived with that set-up for quite a while and then decided to try the McCormack. I had both amps in my system for about 3 months and ultimately chose the McCormack for it's comparitively effortless control and greater dynamic presentation.