5e was incredibly broken. All versions of SR eventually break, but this one was so bad it was breaking before leaving character creation using nothing but the main book. 4e was not as bad, but still had serious editing problems and could be broken pretty easily with a little creativity and a couple sourcebooks. The tone of the game and technologies they tried to integrate also sometimes drifted away from classic SR tropes a little harder than I would have liked. I actually never had a chance to dig into 3e. 2e was the classic game, and likely the one you played. It also breaks in weird ways, especially if you add too many supplements, but nothing like 4e or 5e.