Recommendation for Class-A integrated amp

Truly depends on the speaker pairing.  What are your speakers?

Of those choices I'd lean towards the Pass or Luxman.  The Sugden would be a better fit with higher impedance speakers that aren't 25W minimum like yours.  Your Ascends drop to 4 ohms and I'd think the Pass and Luxman would cooperate very well with that.

Not easy to find these days but you could also consider a Kelvin Lab The Integrated.  I'd love to get my hands on one!