TW just put up a review of B5E and they seem to really like it. I hope there will be a written review too. http://www.youtube.com/watch?v=A7YdDHZkxSU
I'm trying a full bed of B5E and have put in 3hrs or so and it's ok but I found it below average for spin. I think it's too soft for me to get great spin as I get much more spin with stiffer strings. I'll try it for one more session and see how she goes. Maybe I'll lube her up!