Pros:
*Fit standard RC batteries perfect - snug, but not too tight
*Great connection - much better then standard banana plugs
*Female as well as male connectors - great for making custom disconnects
*Great collar length - long enough to solder wires in to, short enough to still have wire flexibility.
Cons:
*The solder hole is too small - this is a minor complaint, but for those without a high-powered iron it could make a difference. This can be fixed with a rotary tool or drill.
Other thoughts:
I use these to make custom battery cables and have yet to have one fail.