I have owned two models of Coincident speakers (and many others used w/ Coincident gear), Frankensteins, Dragons, and the line stage. Their speakers are usually very synergistic w/ lower power, and also sound good with higher power. Personally I highly recommend the Frankensteins as they seem to perform well above their 8wpc rating. I owned the Dragons and I would definitely lean to the Franks.
I'm wondering if when your speakers were made Israel was still using Manley gear that was much higher power. I think I'd just call him and ask him. Israel is a very approachable guy, and I'm sure he will steer you in the right direction.
One final thought is to try an EML 300B xls if your amps can take them. That will give you a bit more power than a standard 300b, and of course the sound quality is top notch.
I'm wondering if when your speakers were made Israel was still using Manley gear that was much higher power. I think I'd just call him and ask him. Israel is a very approachable guy, and I'm sure he will steer you in the right direction.
One final thought is to try an EML 300B xls if your amps can take them. That will give you a bit more power than a standard 300b, and of course the sound quality is top notch.