Personally owned as an adult? PS2. They were so hard to come by at launch, but I justified the purchase as it also doubled as a not so good DVD player, which was also starting to catch on in popularity.

This would be my nephews first console experience as kids. Then the PS3 delayed launch, so I got the XBOX 360. Many 360’s later (red ring of death) and availability of the PS3 slim, I switched back. Also had a Wii. Multiple PS3 slim, PS3 super slims and lots of teen gaming sessions leading up to PS4’s and the kids now young adults migrated to PC gaming instead.