I have said this a few times, it's at level 90+ where the kits start to make a difference. Stats are closely matched up until then so it was easier to balance when the server is young. Kits become rarer as they get higher level and also have better increase in stats. I have also added some rare sets which have much better stats then the normal kits for that level. These will be "rare" though, will be a while before you see any more then likely. All bosses can drop them though.
Will be working on another big update from today as well as little fixes that need doing.
/HiddenMistGM