sounds like you have been listening to some boaters....I have had debates with some guys on the boat forums they say they will only use bullet connectors. I have used Ultra Deans, they are rated @ 75 amps and I have put over 120 amps through them before with no problems. One thing about boat setups though is if they race they are limited to 4s and so they have to use a high turn motor which will draw a lot of amps