So I've been looking around at some of these third party Transformers and they've been blowing my mind. BUt its also a lot of info to absorb with the multiple versions (predaking) coming out and all the different companies working on stuff.

Can anyone give me a quick and easy intro to the wonderful world of third party transfomers - which are the good companies, the not so good, the best toys to get (Quakewave will be my first I think but all the combiners are making me drool) and most of all - where you guys get these from?

Any help would be truly appreciated.