most of the creator sets have hinges in them these days. For larger scale mechs you can't do worse than get hold of a few bionicle/hero factory or even Ben 10 sets as they have some pretty good joints and with the right technic to system connections can be incorporated really well.
The altantis theme has some interesting joints (mostly for the "guardian" beasts") and some nice pieces for greebles and cockpits.
If you can find them Exo force sets are reasonable for starter sets to make mocs from, while the original Knights Kingdom sets give you some interesting short cuts for limbs and melee weapons.
I'm not sure of any specific sets that I'd recommend, but I'm sure most of the larger sets from even the Star Wars brand will have something you can use. Permalink
Hey, thanks everyone. I'm asking because I made a gundam unicorn (again) abut the size of phongs stuff. It's not the destroy mode. I liked the frame so much I wanted to use it again. But I don't have enough pieces to replicate it. I wanted to make a ReZel or maybe the sinanju so I would have something to fight it. Permalink