Per our general comment: #10 also caught our eye, however, we don't feel it looks original and also has some placement issues. With this design we felt the pictograph definitely would be better as a part of the Name (as in place of the A) rather than a separate image. We also had a general wish to see this one develop further so as to appear more original.
#53 is a bit too generic. Maybe if you combined the symbol in #10 in place of the A in #53. Also if you could make the background white it would help in comparing it to the other designs.