I agree with some of the complaints you have, especially on their earlier trucks. All I did was stretch some sprue and re-make the shafts that way. Fortunately, they are under the vehicle and rarely seen.
As a builder who's built at least 15 of PST's armor, I do have to say that their tanks and some of their later trucks are smooth builds that go together very well. There are some inaccuracies in the shape of some of their tanks, but if that doesn't matter to you too much, then they make some fun kits to build. Just watch out for the soft plastic they use, it gouges easy. That of course could also make it easy to apply battle damage to them!