[Batfish]

Yes, I use the gold bullet connectors for the motor/esc connection. One of the main reasons is that so many of the motors and controllers already have that type of connector already. For example, the Lehner xl4200 I bought here had 3.5mm bullet connectors on it already, so I just had to add 3.5mm bullet connectors to my MGM. The new-style MGM controllers have 3.5mm female connectors on the controller itself, so you need to put 3.5mm connectors on the end of the wires you plug in.
For me, it's a matter of convenience and reliability.

I suck at soldering, so I try to solder as little as possible :)

I love the standard 35 amp PowerPoles, by the way. They are the only connector I use now on batteries. I've been thinking about using the 45 amp inserts, but haven't tried them yet.