Alternative to Bullets

[Prozac]

What are some alternatives to 6.5 mm bullets. The first set I had ,I didn't get a good connection and destroyed when I was removing them. The second set, got solder dripped into the inside of the male end, so they wont flex and go into the female end.
I know I can direct solder, but it would be nice to have something I can unplug.

What else is there for connecting up a brushless motor with high current.