I concur... FX-7 is probably my top pick. All the articulated arms, the hyper detail (down to the red spatters, whatever they may be, on the one arm), definitely makes it a figure to be reckoned with. There aren't many that compare, and it's the type of figure that I don't look at and think, "Boy I wish they'd update FX-7!".
I can't say that about ANY figure otherwise.
Every other figure in POTJ could stand to use a modern update... Some it's just a matter of better articulation, but every single one could be updated for sure... Hell, some that WERE updated could stand another update, actually.