It was really difficult to get a seat to listen to the A10 at CanJam as it always seemed to be occupied, and same with the BHSE. Also, the amps were in completely different rooms and using different sources, so any real kind of comparison would be silly. I did manage to get a brief couple minutes with the A10, and liked it well enough with HE90s and HE60s. I'm not a big fan of the Jades, which I've heard on 4-5 occasions now, so saying I wasn't impressed with them this time only confirms my opinion of those headphones (I also don't dislike them; just not for me). I really fell in love the BHSE with the O2 at last year's CanJam, and have heard it a few times since, at meets and in more private settings (hotel room, member's home), so I'm more familiar with it, and liked it enough to sell off most of my gear to buy one. I don't think anyone has had enough time with either to begin a comparison, and unless a really crazy head-fier with deep pockets is going to buy both, or both are at meet where some kind of shoot out can be arranged (same source, headphones, etc), it's going to be very difficult in the near future to get a good comparison going.