I think either one could be directly wired into the freezer. I have a Love but never used a Johnson Controls. The Love requires that it be chassis mounted into something, either a box or the keezer wall. The Love controllers are very programmable, I have yet to mount mine, but I love the versatility of it.
Draft 1: Belgian Chocolate Stout
Draft 2: Belgian Wit
Draft 3: Double IPA
Primary 1: Irish Red Ale
Primary 2: Weizen
On Deck: Imperial Stout, Berry Wheat