Anderson Powerpoles are great. They have a crimp tool - really the best crimp tool I've ever seen. Made specifically for the powerpoles; you can install 2 connectors from scratch in under a minute, flawlessly.

They have connectors in 3 common sizes (many more that are irrelevant for RC) and they all use the same housing, so you can plug anything into almost anything else.

They are rated for up to 45A, but they are high current parts (200+V, so rated for thousands of watts). I use them on my high power electric planes, running 70-80A at 40 volts. My chargers, power supplies, alligator cables all have them, car stereo... they are great everywhere.

http://www.powerwerx.com/anderson-po...owerpole-sets/