I've built too many teams over a very long competitive career to remember any particular ones or assign enough importance to anyone of them to 'feel proud' of them.
I guess I am happy with sun+sand balances, because I was one person who engineered and built on that playstyle a lot in early XY, when I took mons a little seriously and laddered competitively. Back in my smogon days, I liked using Gen4 sand as well.
It's natural for one to feel proud of accomplishments, especially if they're fresh ones in a relatively new area of operations, but one must guard against becoming too pleased with oneself over objectively smaller feats, else one runs the risk of looking very much like a prancing fish in a pod of whales.
That said, which Pokemon do you generally prefer using, competitively or otherwise, and in what circumstances and why?
EDIT: guess I was ninja'd and this answer applies to the previous question. I like many kinds of food, but I'm partial to spiced cottage cheese kebabs with vegetables and chili peppers.