Class A watts vs Class A/B watts

Old question seeking some new answers, Yes I read the archives.
At issue;
Accuphase Class A E550 30w watt integrated
OR
McIntosh MA6900 200 watt integrated.
Driving original Revel Gems @ 87db, 6 ohm nominal drops to 2.5 ohms.
Have a pair of subs to fil in the low end.
BTW We start listening at "normal" volumes but it always winds up loud at some point .
Always wanted Accuphase, give me some ear candy here to help me squeeze the trigger.