RE: Turnigy LiPo and Deans connectors
The Deans connectors are just not up to the job of handling the large currents drawn from a 5000ma/hr battery (maybe 125A with even a 25C battery). The contact area is too small and will introduce heat and voltage drop, reducing efficiency and possibly causing the connector plastic to melt especially when the conducting surfaces start to get dirty. Although it's a pain having several types of connectors to deal with, the large connector on your battery is there for a reason and could cost you a model if you fit a smaller type.
Hope this is of use.