Is not about a company, but about a Game. Skyrim, iam enjoyed a lot. Over 500 hours played.
From Ubi i love Far cry 3 and now I love Far cry 4. Watchdogs in my opinion was amazing game, but I wouldn't play it again. AC Black Flag and AC 2 was only AC games i enjoyed.
Well, every company has pluses and minuses, but the only thing they share is to get your money.