Quote:

...The Era 4's are very impressive but are also $600 vs $330. As far as detail, I think both are very similar. The bass response is what sets them apart....


As already stated, the difference in speaker price will nearly get you a Hsu STF-1 subwoofer. The combination of that plus the M3s will probably be vastly superior to the Era 4's by themselves. Depending on your budget, Axiom also makes great subs.

IMO it's generally better to have smaller speakers plus a sub, vs trying to get low-end response from main speakers.