#15 is creative and campaignable. Not sure about the swishes of colour behind the B... (and the B looks a bit like an M on its side...)... Is it possible to see something along these lines, but with the B a bit more distinct and a bit more of an industrial feel?
#17 has potential but at the moment is not distinctive enough. Needs some more distinct personality - maybe adjust the scale or colours. Maybe somehow make it more about the customer and what they get and less about us?
Is it possible to see a variation with the yellow `as more mustartdy...
As a different variant (since I think you have used standard CMYK colours)... could you please give all 3 of the colours a black (or charcoal) border (thin) just to make them stand out a bit more?
In #56, it is definitely a "B" but it's too solid on the left... could we see a variant of #51 where the pointed swishes actually connect in/touch at the back, but the vertical line of the B isn't as solid as in #56...
Then the variants... - Both the colours from #56 and #51 - With the 3 difference swish styles going off the back (as in #51, #53 and #55)
Hello I work with an google translate. if I understand you correctly then it must be that something if it does not, I'll change this design. Thank you.