I'll chime in. There's no doubt about it, the L-65 will stomp a mudhole in the L-36, the L-26, and the 4311/L-100
I've heard them all, and not for just a couple of minutes. I'd actually take the L-26 versus the L-36. But don't figure you're going to power a pair of L-26, and not have issues, if you get carried away one day at a little party with your Sansui 9090. But the L-65 will handle the 9090 up to the point where your ears might be bleeding.
You will turn such speakers like the L-26-L-36 inside out, and will be looking at repair, either to Drivers, and/or X-Overs.
I'll even go as far as saying, that the L-65 will produce cleaner, tighter bass than an L-300 Summit.
The biggest shortcoming of the Jubal, is its "odd" size. It possesses a killer sound, ideal for many listening rooms, but the "odd" thing about it, it can neither be considered a bookself, or a floor-stander.
It is a speaker, which I feel could benefit, from custom made floor stands,the denser, the better. (Though this necessarily doesn't have to be expensive)
Not very tall mind you, perhaps 12"-16" tall, no more. This will ideally help this speaker position the mid, and HF driver at a better ear level height.
IMO, the L-65 is a killer speaker. The folks at thr Lansing Forum perhaps (no I won't say diss) bu becuase they no more, and have had better speakers from the JBL Family, mightly "slightly" look down upon the L-65.
If you're thinking of snatching a pair, don't hesitate! Mark