i ran 9x45 B2s for 6 years with great results. Loved them. Buddies all ran with 11x45 B2s and they are good too. To me, the 11x45 were too hard to hand hold and so are any 10x frankly. I just struggle with the image due to my own shaking. The 9x45 seemed to allow me the ability to handhold without noticing the shake. And...they are awesome on a tripod.
I eventually found a deal on some Swaro EL 8.5x42 that that I couldn't pass up and used them side x side for a bit. Those Mavens held their own and were very close, but in the end I preferred the Swaro and moved the Mavens. I could have been happy for ever using them FWIW.
One buddy who ran the 11x45 eventually sold his to try the smaller, lighter trimmer 10x42 B1.2 and used them the past two seasons. To my eyes, they were sensitive in the depth of field, but the glass was awesome. From a tripod they were great too. He also moved to a newer set of Swaro EL 8.5 x 42 and has satisfied his "itch" to play with different glass. Another of our group still has his 11x45 B2 but also owns a Swaro NL Pure and it has become his day in/day out glass.
Good luck. I loved my B2 and would buy another without any hesitation.
FH