Silk Dreams Vanilla Silk would be my only DC, but it's not as good for detangling. If I had to pick just one conditioner for everything, this would be it though.
Any Naturellegrow DC....more so the Slippery Elm Bark....
I wanted to vote for either Tresemme Naturals or Trader Joes Conditioner...but I'm not sure how to convert these to deep conditioners. Maybe add eggs, peppermint oil, and honey. Idk.
Curl Junkie Curl Rehab - can use it to DC, as a leave-in and moisturizer, and as a rinse-out or cowash (will never co-wash with it though because of the price).