Accuphase P-7100 vs Pass Labs X350.5

I'm interested to get opinions regarding comparisons between the Accuphase P-7100 & the Pass Labs X350.5 amps. Though their output power ratings are quite different; the Accuphase having 125 watts @ 8ohms / 250 watts @ 4 ohms and doubling right down to 1 ohm, the Pass Labs is more powerful at 350 watts @ 8 ohms / 700 watts @ 4 ohms & again stable into 1 ohm operation. Their damping factors are also similar.

How do they sound & perform is the main factor. My speakers are B&W 802 and any input from members having experiences will be most appreciated.