Just back from my dealer after demoing the BL12s. Interesting. Real mixed feelings about the speakers.
They look great on their own. Next to the BV10, on a wall, they make the BV10 look like it was designed in the 90s. Probably because they are very wide and the BV10-40 looks small next to them. Will be much better next to the BV12.
Sound-wise? We watched a couple of Blu-rays (live concert and a movie) and I was disappointed. The speakers in mode 2, on their own, sound very good. But you feel like you're missing sound when there's nothing coming out from the BV10 centre.
In mode 1, with just the BV10 speaker playing the same audio, you realise that the BV10 speakers are very average.
In mode 3, with the BV10 acting as a centre speaker, that doesn't work either. As the tweeters are so close to the BL12s on the wall, the sound appears all over the place.
Again, I think they are going to be more suited to the BV12 with smaller centre speaker. Don't work too well in association with the BV10.