Another vote for the original xbox. Absolutely fantastic range of software with many amazing playable titles. I like my Xbox One but no comparison for me.
I'm a little tired with modern gaming, the same stuff getting recycled with improved graphics and many multiplayer games which I'm not really into. It's a bit like the movie business with a huge amount of comic book films which I'm really tired of preferring original science fiction. So I just feel its a bit like music where some people prefer 80s or 90s etc, all valid choices. The original xbox was just an era of games I enjoyed more and it was the best console for pulling off those games with decent graphics and sound.