[schlagwerk]

You'll find collecting DX mecha a far more expensive hobby than SHF. So much I'd suggest you budget wisely and make absolutely sure you don't go overboard. ..and then there is the space issue of where to put everything.

Other collectors are a good source, especially as a new series is ending and they're deciding they don't want to keep the toys after all. Mandarake is always good, but if you go back past Gingaman/Lost Galaxy, prices start to jump dramatically. Then there is Yahoo Auctions Japan.. this is the ultimate resource and too expensive unless you have someone in Japan to help out. I have never found a proxy bidding service cheap enough that it makes it worth it in the long run. But on the other hand I owe YAJ for a couple of minor victories like Great Icarus and my Mugenbine collection.

And unless you're independently wealthy, don't consider going pre-Zyuuranger/MMPR.

Honestly I'd say pick and choose which to get. Only complete 2 or 3 of your favorite seasons. There are several well-informed & experienced mecha collectors on this board such as Den-O and myself (though I'm more solely about the toys than the series they come from). Also there's a guide book that covers every series up to the beginning of Gokaiger, and I am completely blanking on the title until I get home. But that thing is one of the greatest resources ever for DX mecha collecting.