Advice on pairing

[FrancisM]

Hi,

I just bought a pair of Mission 760i speakers (I have another pair of these in Portugal paired with a Pioneer A400 and I love them) and I am now in the process of buying a second hand amp to go with them.
Right now I'm considering the following:
Cambridge Audio Azur 340A SE Integrated Amplifier - 75
Pioneer A-20-K A20K Integrated Amplifier 50W - 90
Arcam Delta 290 - 93

I am really betting on the Cambridge, as I read wonders about it and I can't seem to find another A400 for sale on eBay (I wouldn't sell mine either...)

Any thoughts?

Thank you!