I've owned Vandy 1c's, 2ce's and now 3a's. I've used MANY amps with them (check out my system for a partial list) including McCormack DNA .5 and DNA 1, although never a 125. I like McCormack amps a lot and think they are a great bargain, but I'm now using a Belles 150A Reference and there is simply no comparison. On the used market you should be able to find a Belles for close to the same price as a 125 and it's definitely worth checking out.
Cheers
Cheers