Tntate,
I thought by now, after twenty-something replies, it would have been clear to you there is no such answer.
An approach could be to search A'gon Virtual Systems and threads and look for what amps people use with your speakers, or very similar B&Ws, make a list, drop those beyond your price range, read about the amps left in your list, arrive at a short list. And by all means, try and listen to them. No need to go nuts about, at least in my view.
Why are you so focused on Wattage? Sorry if you mentioned this already - I don't recall reading it.
I thought by now, after twenty-something replies, it would have been clear to you there is no such answer.
An approach could be to search A'gon Virtual Systems and threads and look for what amps people use with your speakers, or very similar B&Ws, make a list, drop those beyond your price range, read about the amps left in your list, arrive at a short list. And by all means, try and listen to them. No need to go nuts about, at least in my view.
Why are you so focused on Wattage? Sorry if you mentioned this already - I don't recall reading it.