Rodster....I read through the replies but didn't see what I was looking for. You have trusses @ 24" on center which is standard, BUT.....are your trusses MADE for storage? So you may want to watch how much you put up above. If you are like most, you will have an access door and you aren't venturing too far from the opening to store things.
As far as a ceiling, myself, I have drywall. The guy that finished it, textured it which back at the time I was fine with. Today, I wish it was smooth, but oh well. My garage is going on 15 years old and I have not had a bit of problem with drywall as far as cracking.
A lot of people won't put drywall in a garage because a lot of times the ceiling WILL crack. It's done it on the house garage ceiling. My drywall guy tells me that the reason they crack is for a couple of reasons. One reason and the main reason is that most won't finish the ceiling off if it was contractor drywalled, or if the contractor textured the ceiling, it has not been primed and painted. He tells me that if a ceiling is painted it will not absorb moisture like an unfinished ceiling. ANd if the garage is not heated, you may pull a car in, in the winter, it may have snow and ice that melts off and it creates humidity, which will expand the drywall, then when the moisture is gone it will contract, therefore the seams will split. A good coat of primer and paint will seal the moisture out from getting absorbed.
If I had it to do over again, I would either go with drywall, or I would go with a metal ceiling. I like the looks of the metal ceiling myself. But back when I built my garage, I built it with what I could afford at the time. Plus the fact I was more familiar with drywall than I was with metal. Finding this site changed my mind on the way I would have built it, but unfortunately, I joined this site 5 or 6 years AFTER my garage was built.