hey lucas, the ho52 is definitely stronger than the d60. the ho52 was the forerunner of the 14 bolt, and is similarly sized. in dana terms, they are roughly equal to a d70. however, the ho52 has coarse splined axleshafts (11 or 17 splines, cant remember which) and the d60 has 30 splines (at least a d60 from one of our trucks), which is better. however, i am going to swap out my dana 60 for an ho52 w/ No-Spin, and I don't think i will bust it up with my wimpy 350.
also, there are more gear choices available for the d60. i have heard some members have a hard time getting parts for the ho52 but a board member posted a link to an online parts store that had bearings and seals for the ho52, and they weren't that expensive.