@zlone Lots of good advice here. If you can find an impedance graph for your speakers and see that they spend time at 4 ohms or below, you will want to ensure that the amp doubles or comes close to doubling wattage when impedance drops to that level. Another thing you may want to look at is how many watts of class A are available before A/B kicks in. But as many have already stated, specs alone do not tell the whole story, in the end it has to sound good to you.
Channeling @atmasphere who might chime in on this topic, and explaining more about "how" and "why". My pure Class A solid state 50w amp with mosfet opts (always on, biased full Class A), sounds better than my other Class AB amps where the first 10w was supposed to be Class A. Not sure why exactly. I just know the pure Class A just sounds better in my setup once everything is good and warmed up - fwtw.