I run bullet connectors and never had battery issues ever.
Honestly I am using them because I didn't have to worry about soldering them and they are well protected from the chassis. Easy to grab and handle. Heck they work. Plus I needed the length because some packs switch or have the positive and negative connectors opposite of what I have. So if I wanted to try a different pack I would need the length. I may use the Trinity bullet plugs I have later. I personally like it and gets the job done. Looks better in person. 24.5 mm I would say is maximum height...