I like my 21 CuFt, cheap, black, top freezer unit that came within 1/2" of fitting perfectly... 1/2" too tall when I replaced my NoCold 1200. If you click on "Projects and Upgrades" above you will find my DIY install with pictures and model numbers. My install has the refer against the ceiling so the DW needs to be fairly tall to reach things in the back of the freezer... she was the one who did not want to give up the large drawer below the refer.
Most units are setup for adding an ice maker ($100) with the power and plastic water line installed... the cheaper ones have the option of adding a ice maker.:W