You just gained a level in real life! What class would you take?

[Jack_Simth]

For Iron Man, you're probably better off with the Aegis.

Compare. First off, the Summoner uses arcane spells, which means it has to worry about components and highly visual effects. And while the Aegis does not receive powers, it is a psionic class and receives power points; if you multiclass or PrC, or harness Power Stones, those points carry, and psionics - as has come up repeatedly in this thread - require neither components or messy visual effects. Second, a Summoner's Eidolon is immediately banished if the Summoner is unconscious; nowhere does the language of Synthesist change that. The Aegis has no such language with respect to his Astral Suit; once formed, it remains formed unless dismissed or otherwise removed. So you can sleep in that bad boy.

If you go Pathfinder, anything that can craft magical things can get you an iron man suit, thanks to construct armor.

Side note: As discussed in the last thread, for a Pathfinder crafter (who needs worry only about the GP value in crafting), Salt is about the best source. 5 GP per pound, and you can find 50 pound bags for under $20 quite easily.