Mouser has a great selection of molex 93 and other molex sizes.
http://mouser.com/Search/Refine.aspx?Keyword=molex+93
After using lots of different types of molex and anderson powerpole. I would also advise you to stick with anderson powerpole for FIRST.
Molex connectors work great, but if you need flip polarity or regroup your wires you will have to rewire your connector which takes significantly longer than anderson power poles.