Speaker Choice under $750 for blues...

Try to find something with a bigger woofer , 10 - 12 inches , depending on the size of your room .
With only 70w you will also need a high impedance and db rating so as to be able to move the woofer . The higher impedance should also help with the attack or transients which may provide some of that bite .
I don't think that you would want to have a none smooth tweeter , especially with the quality of classic rock recordings .

Maybe some vintage JBL's or Klipsch .

Good luck .

Thanks for the input I will take that into consideration. I do have a subwoofer which helps augment the bass.

Soliloquy 5.3, several pair on sale here, but not mine...
Chris

My Klipsch KLF-20 is pretty good on rocks and jazz. You can get a pair of used one at $750 with shipping.

Klipsch - check out the latest RF62 or RF82 - I see a used RF82 for $650 on A'Gon..... Good Luck