The 2012 model can only be aligned with shims. Subsequent models can be alignes at the burr carrier, but can also be shimmed if necessary. This is pretty uncommon, as after the first model, LWW paid greater attention to the alignment of the box and driveshaft. The end result can be equally good with either model, but the new ones make it easier. It's not as precise a Monolith Conical, but there is little difference in the cup, when the grinder is very well aligned.
Also, if you plan to do light roasts, you want the TiN coated burrs. They are easier to turn under load.