I'll add mine. I just finished breaking in my Manley Neo-Classic 300B SE/PP monoblocks. LOVE them. Now if I can just afford 2 pair of Sophia Royal Princess 300B's to put in them :)
Seriously, no desire to upgrade these amps. All the flexibility that I could want: SET or PP and variable feedback. I may upgrade my speakers and change out my sources, but I'm done with the amps unless someone is willing to give me some Lamm monoblocks.
PMB