I have the TAD-150 with a McCormack DNA-1. I am driving Vandersteen 2CE Sigs. I paid $800 but, you can get a McCormack DNA-0.5 for around $600 or $700. If you don't need them driven too loud, the 0.5 should work fine. I ran a thread some time back and people were using the Vandy's with the DNA-0.5. I think the Vandy's are slightly more inefficient at about 86DB. If you buy the TAD-150 you will be surprised at its dynamics.
Eagleman
Eagleman