As much as dice are fetishized, I’ve never had one die or set of dice that were my go to favorite set. I’ve got dice that I like, for various reasons, but… well, I’ve always had terrible luck, no matter what I roll, flip, or spin. Every once in awhile I’ll have a hot streak, but it’s rare, and usually not confined to a specific die.
I did have one d20 that was just a miserable chunk of yellow plastic. It hated me, and during a stereotypical weekend long, basement confined D&D game, after a string of 1s, 2s, and 3s, I poured out all my dice, and smashed that d20 with a hammer in front of them all. I don’t actually recall if it helped much, but it was memorable. More so than the game, sadly.
The dice I use most often are my black and silver gamescience dice. They’re nothing special, but they’re very easy to read.
I also have my chessex scarab jade with gold.
And my sadly neglected d30 and my light up d20.