#37 and #36 are cool ! The font isn't what I seek ! Try something more "futurist", "terminal" or "computer based".
The drawing is nice for the amalgam of the lower case "b" and the "i". Try to improve it either with the 36 or 37 model with more 3D, lighting, metallic effect maybe for more depth or ground effects !!
It's nice for #49 but too simplistic !! I would like to have more complex thing like amalgam of letters BI togeter with a drawing, in a drawing or even the BI becoming a drawing by itself.