question of integrated amplification: PASS LABS INT 250 VS ACCUPHASE E-800

My speakers are the Sonus Faber Guarneri Evolution which  have a low efficiency: 86 db at 4 Ohms. So they need a lot of watts and current. My listening room is 23 feet X 23 feet with a regular celling. With the Pass Labs int 250 there will be no problem driving the speakers. I still consider the Accuphase E-800 but i hesitate because it is only 50 watts pure classe A (8 ohms) and 100 watts pure class A (4 ohms). Enough power despite the damping factor of 1,000 ? Another choice: the LUXMAN L-595 ASE?