i Say start with DOTM. Since its out on shelves and will go on sale soon. You might want to start with the bot/cons of DOTM you like (Surely you've seen DOTM) and then start from there, and if you really want to, you can collect the whole
screen cast
That's what i did when i started collecting in 2007. (Althogh stuff was cheaper and there were less TFs in the 1st movie).
Seems like a better idea than starting to collect classics 3.0 (generations). At least with DOTM you can get all the essential characters (Prime, megs, bumblebee, ironhide ETC) But if you start with generations, you kinda too late for the whole "classics-verse" with the main characters like prime, megs, and BB all gone since 2006. So Basically you'll be getting all the "extra" characters of G1... And its really kinda ugly to have a classics collection missing out all the essential characters (Why on earth did i pass on prowl, hound, ratchet and ironhide

seems so "bare" without them.)
Hope this helped... in some form or another
