Fantastic Four Vs The Vision

The Vision doesn't get enough exposure from Marvel and therefore a lot of people fail to realise how powerful he really is.

I think he can take the FF.... what do you think?

No prep, Fight begins in the centre of Manhattan Island and can travel to anywhere from there

http://www.marvel.com/universe/Vision

He could take them if he gets the element of surprise, maybe!

They can't do much to Vision to win this one. Unless Invisable Woman catches him off Guard and blows him up from the inside out.

Outcome depends on whether or not an intangible vision can materialize inside of Sue's shileds.

Well he can travel through materials and even into people, I would assume he could go through the shields.