I did the chest freezer connected to a Johnson COntrol to regulate the temp. I drilled a hole in the lid and placed a tower and love it. I opted for the tower because having just the loose hoses flopping around was unappealing to me. Also, the tower adds a nice "wow factor" when visitors come into the garage and see what I have. When they hear I built it myslef they are even more appreciative.
My opinion, in case it isn't clear, is Tower.
Hope this helps!
Jay