Is the PS audio M1200 D class amp worth buying or should I stick to A/B class mono amps

I've been running PS Audio M700 mono blocks for over 2 years running Mangepan 3.7i's.  Very clean, smooth great sounding amps.  I've never come close to running out of power and I will get on it now and then.  I was using a Bryston amp (250 wpc) prior and felt I didn't lose a step with the M700s.

An alternative to either the Cary or the PSA.

@jackd 

That EX-B7 does not have enough power, I'm currently using an Anthem P2 amp and looking for more power and the TEK Audio EX-B7 has less power than i currently have, but thanks for the recommendation.

What are you trying to push that needs for than the 250 wpc the Kinki EX-B7's provide?

My speakers