Buy a used NAD C370. Between 150,- en 200,- euro you have 15 year old top class amp which techology is similar as today's NAD amp's which cost now around 2000 euro.
I'm with you on the used amp side of things... The used NAD's, Adcom's, Rotel's, or even Bryston and Krell for a few more $$$ are all amps that would be very expensive today. These were made when 'inefficient' speakers were the norm, and have mountains of power, and power supplies to match.
Want a real bargain, look at some of the old multi-channel amps. I just picked up a Madrigal Proceed 5, which was apparently the 'value' line for Mark Levinson for a little over $800. 125w x 5 channels. Originally $5k.
I have an Adcom 545ll, and a Krell 250x3. Love them all...I don't spend my time wondering what I'm missing.
Looking forward to adding the new 120lb beast into the mix!