Going from the Aragon 8008BB to either of the Pass models you mentioned with the VR4 Sr's might be disappointing in the bass and dynamics but would sound more refined in the mids and highs.
The problem is the $8K budget for monoblocks. It can be done but you might have to get used or go to some of the class D amps for similar grunt as the Aragon. You could run dual Plinius SA-102's, in bridged/balanced mode for 400W/ch for about $3K each used, except you'll probably want a preamp with balanced outputs.
The problem is the $8K budget for monoblocks. It can be done but you might have to get used or go to some of the class D amps for similar grunt as the Aragon. You could run dual Plinius SA-102's, in bridged/balanced mode for 400W/ch for about $3K each used, except you'll probably want a preamp with balanced outputs.