Deans plugs are high quality connectors that offer about as much resistance as regular wire. I don't know how much resistance jst's have, but it is probably more than the deans. Deans are usually going to be better than most other connectors. Advantages would be slightly more performance since the flow of power is less restricted. mini deans might be too large and bulky. the micro deans plugs are much smaller. i use micro deans in all of my rc cars. atomicmods.com is a great place to get the micro deans plugs, as well as wire and other tools, and they have some of the best customer service ever.