Good signal anywhere ==> Garbage component any where ==> Garbage out
I am another who feels that it is all about the room and thus what speakers will match with it. What walls are available, corners, odd room shapes, furnishings, etc. will dictate what speakers are possible. And then the buyer has to choose which priorities are highest for the final speaker.
Finding a matching amp is really not all that difficult as there are so many great amps out there to handle high or low efficiency speakers, or those that require high current output, etc. Sadly, the same can not be said for preamps...only a handful have cut it for me in 30 years.