They look pretty neat, although I wouldn't get them for robotics because they look like they're heavier than the standard crimp on connectors we use. The "Water-Tite" ones might work good on our boat trailer, seeing that saltwater loves to eat copper, but I think the crimp and heat shrink ones I got last time will last a long time. Too bad they can't make decently sealed LED lights or step down the current at the tongue of the trailer instead of at the lights themselves (which would help with corrosion for the trailer lights if they get wet). I guess the good thing about the LED lights we have is that they have a lifetime warranty, so every time they break, we just go exchange them
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