If you don't mind the quality and click joints of revoltech, their iron man is pretty decent sculpt-wise. Not as flat of a face as figuarts. Mine had its chest fall off after it fell off my table and I just super glued it back. I don't expect much from revoltech in terms of quality but their iron man sculpts are pretty good.
I don't think the fact Revoltech are now re-releasing their mark VII is a coincidence either. If you're on a budget, it would fit in very nicely with the Figma Thor and Spider-man and will only cost a fraction of the price.
It definitely doesn't look as nice as the Figma, but yeah, if you wan a cheaper version, it's one I'd recommend, especially over the Figuarts which has really odd proportions.
I got Akane from Vividred Operation. Nice little figure, though I again miss a base 'Determined' face. I'm really surprised she can hold her boomerang out at cool angles, but she can and it looks amazing.