The most common method that I've seen is Anderson Power Pole Products. I didn't they were
that pricey but it's all relative, I guess (around $1.26 a set.) I think we save a bit of money by buying the connectors on a
reel from a electronics supplier. The
West Mountain Radio crimper is well priced. Also, buy appropriately sized contacts for the wire that you're using.
APP may not have the least resistance but they sure are easy to use and pretty common in the FRC community.
Edit: Actually the
PowerWerx pricing is pretty darn good in qty. Their crimper is so-so quality, IIRC.