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

I can't speak to the 1200 but I had the entry level S300.  Ran cool and provided years of trouble free service. 

I've had the PSA S300 6 months and it is a great sounding amp. The VTL ST150 needs re-tubing and that costs almost what the S300 did, on sale. The highs are smooth and the bass is so much better controlled. Enjoying the S300 a lot. So much so I have another brand class D amp on the way.

Thanks,

aldnorab

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.