I picked up a PA-7 cheap a few years ago. It makes a pretty good subwoofer amp (its current use), but I don't like it as a full range amp. It might work on the bass section of your new speakers.
As for durability, I know a guy who used one for years to drive a pair of Apogee Duetta Signature speakers, so I guess they have some stamina.
As for durability, I know a guy who used one for years to drive a pair of Apogee Duetta Signature speakers, so I guess they have some stamina.