Which 2 hp Dust collector ?

Now to decide which 2 hp dust collector to buy .

The ones I am considering are

http://ift.tt/1In80m6 only on sale until tomorrow !

http://ift.tt/1In80m8

http://ift.tt/1In831m I can find no info on size

http://ift.tt/1In831p The bigger footprint size is my main concern here

http://ift.tt/1In83hD again no info on size

http://ift.tt/1In83hF A lot more expensive

If anyone has any experience or thoughts on these options I will appreciate it
Garry