Finally taking the leap to Monoblocks

Thought I'd throw this one out there. In light of my 4B-ST being sick, I thought I would go ahead and start preparing for the next stage in my audio evolution. Upon its return from Bryston, I plan on moving the 4B-ST over to my home theater system and eventually pairing it with the new 6B-ST. Anyway, I'm looking for advice on some monoblocks to replace the 4B-ST in my audio system. I thought of the 7B-ST, which I can get a good deal on. I can also get a good deal on some used Aragon Palladium amps. I've auditioned the Palladiums, they are so nice. I've never listened to the 7B, but I know what the 4B can do. Anything else out there that I need to listen to? I need something that will outlast all my other components, including another speaker upgrade. I would like to spend less than $5000, but I'm willing to listen to anything.