I haven't heard any of the Electra floor standers enough to give a good opinion, but I have heard the 906's. I've compared them to B&W 805's and Totem Mani 2's. Out of the three, the Totem's were the best. They were the most neutral and had an incredible bass response. The JM's came next. Not as much bass as the Mani's, and the top end was a little bit more revealing, almost to the point of being bright. The B&W's were my least favorite of the three because the bass was a little loose compared to the JM's and the Totem's. Plus the top end was a tad bright.
In the end, I bought the 906's because they were the cheapest of the three, and on top of that, the store stopped carrying JMlab, so they were clearing out the rest of the models. I got them for 30% off.
