Style 1: The wide varieties in the 'Eyes on FF' banner looks a little messy; the general contrast and balance of colours doesn't appeal to me.

Style 2: Orange = not my kind of thing, either. The pictures at the top seem sort of like a semi-random jumble, and there's undue emphasis on Aeris' chest...

Style 3: Not bad, but again the banner is a bit of a mess - a poor font, and a predominance of FFVII: AC characters.

Out of all of those, I like Style 2 the best. While it's not my favourite colour, the balance is good. A nice feel of consistency that the others lack. The use of the current EoFF fonts is nice.
In fact... if Style 2 could be changed from an orange-scale to a blue-scale, it'd be superb.

However, I don't feel that any of the designs are better than the current style. Just my opinion, though. I'd prefer that it not be changed, unless it was being changed to something like the EoFF Ash style from the forums.
I won't vote at this stage, but I'll vote for Style 2 later if it needs help to win...