So you like the sound of BL? What does BL sound like? //content.invisioncic.com/y282845/emoticons/tongue.gif.6130eb82179565f6db8d26d6001dcd24.gif High BL is important in SPL setups that burp at or very near tuning, as the high motor force helps overcome the damping effect playing very near tuning has on cone motion. But for a daily driver who is playing freqs all over the place, Id rather have a consistent BL force than simply a high one.
You have described what specs you are after, you just haven't described why, or what type of system you are after. If you just want this, this, and this spec met... its a simple matter of doing some of your own leg work to look up specs. We cant really offer any opinions here on final performance, all you are asking us to do in essence is help with your leg work.
I hope your list of specs works out to sounding the way you think it will. Cheers.