Couple of things on the ACf7rev2, AFAIK it's exactly the same cooler as the ACf7pro or ACf64pro
The only difference is they now use a multi socket mounting system instead of producing different coolers for different sockets and they've improved the fan.
Same heat pipe size and position, same fin area, spaceing and number.
Oh and slightly more expensive
(strangely enough I've yet to see a review where the original is pitted up against the rev2)
It's still a decent cooler, but it's just not as good or as cheap as it once was and the competition is making cheaper better coolers now)
If you go with the NZXT Vulcan then stick with your current ACf64pro (if you go with and AMD system) as I'm pretty sure it's a bit too narrow to use the larger coolers.
Unless the heat pipes are damaged a cooler suffers minimal effects from age, as it's self contained and metal.
I'll admit I'm not a big fan of it (excuse the pun) for a quad core as it can get a little loud to me (I've really gotten into keeping my pc's quiet)
If you still want to consider full ATX then have a look at the NZXT Panzer box, it's not without it's faults and it looks smaller than it is (mainly because it's short but wide)
The other I'd seriously look at is the new Coolermaster HAF 912, this thing is on the small side for a midtower however it's a good chunk wider than most (not as wide as the panzerbox) this lets it fit a 200mm fan in the front and top and leaves plenty of space behind the motherboard tray for cable management.