well, its not sooo much how the speakers match my bk's...its how they jive with my amps ...and, of course, every other little part of the chain...!
My Mesa Boogie Marks have to feed EV m 12L speakers, either in 4x12 and/or Thiele cabs-unforgiving,efficient, headroom...very little coloration
...my Bray 50 watt needs greenbacks and /or celestion g12 65's...
I do favor hotter pups with my boogies....lower output with my Bray-for obvious reasons :D
speakers are a BIG part of the tone chain..I had no idea when I was a younger dude who was ONLY concerned with technique...of course, my first real amp was early 70's Marsh with early 70's greenbacks,so I did have tone and didn't even know/appreciate it
there is no one be all/end all speaker-gotta find the right combo-I own many others, but they all serve their "purpose"