Wailbait: you have very good power amps so don't waste them!
Before buying a used Matrix 801s, I'd urge you to audition the B&W Signature 805s. They should be perfect for your amps and much better quality except for the lowest fundamental bass resp. You can always add a good subwoofer in the future to achieve the "true full range" system.
I started a new thread elsewhere "B&W: Signature 800 vs Nautilus 805 vs Matrix 805" that you might e interested.
Before buying a used Matrix 801s, I'd urge you to audition the B&W Signature 805s. They should be perfect for your amps and much better quality except for the lowest fundamental bass resp. You can always add a good subwoofer in the future to achieve the "true full range" system.
I started a new thread elsewhere "B&W: Signature 800 vs Nautilus 805 vs Matrix 805" that you might e interested.