The Harvest - I really like the original Harvests best. While the new versions are really nice too, they will get more green (harmless) algae with the white decks) I have I think 66+ Harvests)
The Harvest 360 - Is a nice looking machine but after looking at the deck layout I do not know if it is really enough room. Great Concept, I just think it needs to be a larger circle for it to have room. I do not own one.
The Harvest Thin - Was going to get one but it was too long for the spot I wanted it. I like the looks of this as well. It is just a longer sprout with a stronger light then a sprout.
I really like the Ultra but that is a larger machine. Amazon had it really cheap yesterday, now it is up to $184. Of course when the Bounty is at a great price I will get that.
I had the original Harvests and liked those: they are in other hands now. I do Have the Slim, BUT...I only have it there to fit the space and get more pods growing than the Sprout that was there. I prefer the original Harvest in general.