There are lots of variables in play, but I learned a long time ago that not all watts are created equal, and that the measured specs for many amplifiers don't tell the whole story about how well they'll actually drive a speaker. Nor the do specs indicate how an amp will sound. Some of that is due to the fact that speaker impedances vary a lot, but most don't pose an unusually difficult load for a decent amp.
If the nominal speaker impedance is rated at 8 ohms, most speakers will do fine with a well designed amp that has good current flow, unless the speaker is known to have a very low or complex impedance. If nominal impedance is 4 ohms, you'll want an amp that control a low impedance speaker well. It shouldn't be too difficult to research if any speakers you're interested in are known to to pose very low and/or difficult to drive loads, or how well a particular amp handles more difficult loads.
As long as a few minimum impedance requirements are considered, I've always tended to focus more on how the speakers and amp sound together, with more focus on the speakers first, then try to find an amp that's capable and that I like the sound of. It can take time, and trial and error, but can always bring a lifetime of enjoyment when done well.
If the nominal speaker impedance is rated at 8 ohms, most speakers will do fine with a well designed amp that has good current flow, unless the speaker is known to have a very low or complex impedance. If nominal impedance is 4 ohms, you'll want an amp that control a low impedance speaker well. It shouldn't be too difficult to research if any speakers you're interested in are known to to pose very low and/or difficult to drive loads, or how well a particular amp handles more difficult loads.
As long as a few minimum impedance requirements are considered, I've always tended to focus more on how the speakers and amp sound together, with more focus on the speakers first, then try to find an amp that's capable and that I like the sound of. It can take time, and trial and error, but can always bring a lifetime of enjoyment when done well.