Inexpensive Option
Very small, low profile plugs. These would be good in non-critical applications. The positive can accept up to 16awg wire. There is not a great place to solder the ground side, so a little dexterity is needed. I wouldn't recommend trying to use wire larger than 18awg. 16awg can be used (depending on insulation thickness) if you bore out the back of the plastic shell, but I wouldn't recommend it. Overall, the price makes them worth a shot since there's little to lose. It's nice to have options available in addition to the more expensive (but better) Oyaide & Elec Audio plugs.