I like the new part better, mostly. Metal tabs won't break going forward, and it does work with 12v. I'm planning to cut the old connector off- if you cannot get the old part, I think there is little chance of someone needing the connector moving forward. If a common "slot" tab fits in each position I may change my mind.
The thing i don't like, it looks like if you manipulate the button a lot, the LED will rotate out of position
"Give a man a match, and he'll be warm for a minute, but set him on fire, and he'll be warm for the rest of his life."