Take your favorite one or maybe that one you still have get a crossover speaker improvement kit for that model from GR research in Texas have it done or do it yourself to the speaker and enjoy.
it will be the best it could possibly be
hard to quantify but let’s say you could make it twice as good as it was before that’d be pretty significant wouldn’t it?
Try it if you don’t like it sell it!
So far he has improved several speakers I sent him Yamaha ,Sony and they are so good now, so much improved that I would keep them and I could enjoy them and several of these were not expensive high end speakers.
So when you start out with something that's pretty good to begin with it's even more impressive when it brings a smile to your face instead of a frown or a headache
Yes it was worth the money imho