Recommendation for Class-A integrated amp


I am looking for a SS Class-A integrated amp that is in 20 to 40W range, the short list I have so far are:

Sugden A21SE
Pass INT25
Luxman L-590AXII

Are there more you would recommend to check into?

TIA for any inputs.
elan120
I did think about the Luxman L595ASE, but can't find much internal difference to justify the higher cost, so any information about the internal improvement would be very helpful.

The amp will be dual used in main system that has Abyss AB-1266 Phi TC, and the secondary system has Ascend tower with RAAL option.