I've got the Engel MR40F and am very happy with it. One of the advantages of the Engel 45 over the 35 is its ability to hold tall bottles standing up. The MR40F does this also. I expect that the plastic shell of the MR40F will also age a big more gracefully than the metal shells of the other fridges.
Take a look at the new ARB exclusive fridge if you get a chance. Having dealt with all of the fridges mentioned, its worth a close look. Each have their benefits, find the one at most closely suits your needs.