Andy, I have heard many of the amps you have including the Paradise, EAR and Croft Epoch although not modified to the same degree. The Sondex is unfamiliar to me.

I would say the Neurochrome modulus 686 and the pre amp should be on your list of amps to listen too. It is an extraordinary sounding amp which may make you question the use of valve amplification. It is the most exciting and significant amp I have heard in the last 10 years and I would strongly recommend you try one.