While I have never heard either of the amps you are considering, I highly recommend doing something similar to what Tvad is advising. Speaking from my experience, the only way to have peace of mind in my audio equipment decisions is to do A/B comparisons with both components in my room. When I have strayed from this step, I always have had indecision at some later point down the line. There just is no substitute for peace of mind in this hobby. Of course staying with reasonably mainstream equipment helps with the ease of resale. Good luck with your decision.