The D44 and 10bolt are pretty much equal in strength, the D44 is a tad bit stronger but it's not worth mentioning.
The bolts with 30 splines are a little bit stronger then the 10 bolts with 28 splines, I don't remember the year they came out with 30 splines but I want to say it's around 88?? Someone else will chime in on that one.