DL is a "clone" of the DA, the 53 has the reads on the side, is slightly heavier, slightly smoother, slightly less power, has 3 bearings rather than the 2 in the DL and DA. Tom at WildHare RC has a hop-up kit for the 53 that makes it as powerful as the others. Either would be a good choice, other good choices would be Aera 51 , MT62 and MT57.