#35 needs to be read twice and I am not sure its not that I know the name makes it legible, but on another level it uses = (f) < (k) whch are coding symbols so it get a certain techie audience
#37 works better for us than #36. #39 is interesting very digital but the F could be mistaken for a A probably has legs. #38 does not seem to work although it is very pure concept perhaps flat blocks of colour, we could not decide if we should not interest this one - something about it has kept it sorry for being so vague.
#58 I agree its gets across "digital" but lacks punch. Like #55 its different and the egg shape pleasing. #57 gradient does not add anything. #37 we still like the trick with the f and K