#4 and #6 I do quite like the green and the glossy effect of the logo. I do also like the font syle. I am not sure about the logo being above the wording or that the logo is quite right (see my previous comment). please could i see this in blue.
I like the concept of a profile / cross section view of the keg. I would like to see images that are very closely based around the profile of actual kegs - like the photo i uploaded: Keg 50L JPG if possible?