Unfortunately I have not heard those amps personally however from what I've read I would go with the AGD Tempo or the AGD III Duet.
Here is one source of information:
3 choices for power amp
I am ready to upgrade my power amp.
I am currently using the amp section of a Primaluna Dialogue Premium Integrated Amp, thru the HT input.
My preamp is Atma-Sphere MP 3.3 Mk III.
My speakers are Acoustic Zen Crescendo MkII.
I have narrowed down my choices to the following 3:
Benchmark AHB2, Atma-Sphere Class D, or AGD Tempo.
Has anybody compared any 2 or all 3 of these in their system?
I would appreciate your feedback. Thanks!!