I always understood Deans are rated until 50 Amps. I use 4mm gold connectors. Hobby King is a good source for them. Some use 5,5mm but I think 4 mm does the job.

Volkert

http://www.hobbycity.com/hobbycity/store/uh_viewItem.asp?idProduct=67&Product_Name=4mm_Gold _Connectors_10_pairs_(20pc)