Sony: PS3. It's just a total mess to me
Microsoft: I'll go with the OG Xbox. Xbox never interested me as a PC gamer, but that one made Microsofts focus switch away from PC
Nintendo: The N64. Those early 3D graphics looked horrible back then and look even more horrible now. And a distinct lack of great games to play if you remove the handful of really good ones.
The Nintendo eShop rating Thread: http://gamrconnect.vgchartz.com/thread.php?id=237454 List as Google Doc: https://docs.google.com/spreadsheets/d/1aW2hXQT1TheElVS7z-F3pP-7nbqdrDqWNTxl6JoJWBY/edit?usp=sharing
The Steam/GOG key gifting thread: https://gamrconnect.vgchartz.com/thread/242024/the-steamgog-key-gifting-thread/1/
Free Pc Games thread: https://gamrconnect.vgchartz.com/thread/248138/free-pc-games/1/