I use the tube, mostly for superlathering.
I like both but I can get CO Bigelow (same stuff) at any Bath & Body Works which gives it a slight edge.
+1I would recommend not paying any attention to reviews on amazon. Some are legit, but a lot of the reviews are either from people that have not tried the product themselves (reviews from the wife saying how much husband loves product), or people that are paid to write good reviews.
On a positive note, Proraso is a decent product. I have the green in the tube and the red in the tub. Both make decent lather but i prefer the tub because i like to swirl the brush around the soap. The cream works just the same, so it would be whatever method you prefer. Pretty sure it is the same product.