Pass Labs amp / 4 ohm speakers

Hi I have a pair of Genesis G5.3 speakers rated at 90db sensitivity and 4 ohm imp.  The specs on these speakers is pretty close to the Wilson Sasha speakers.....In your opinion with these specs what Pass Labs amps would match up most favorably? Looking at XA-60.8, 100.8 . Any thoughts or suggestions would be greatly appreciated!,

IMHO, more power is always good.  You get better headroom and a better ease to the sound.
and as you move up the XA line you get better overall sound quality, not just more power...