It all depends on how often you are running the Delta CUP. If your planning on running it 40 hours a week or a total of 600 gal of ethanol your certainly going to want to get a falling film recovery system like the Sprayvap, Trusteel, and Pinacle. Check out this thread for pricing/recovery discussion (link: Pinnacle Stainless A.E.S.)
If your not running the Delta CUP a lot or are on a budget less than $100k+ I would recommend the classic rotovap. If you preheat the ethanol solution as discussed in “Optimizing your Rotovap” (link: Optimizing your RotoVap) you can achieve recovery rates faster than the manufacturer advertises.