I sat down and beat all of X7 in one sitting today on stream. I hadn't touched X7 since I was a kid and unable to beat the final boss.
...Man, that game deserves it's crown of worst in the whole franchise. At least X6 still has the PS1-style gameplay.
I remember looking for X7 since I didn't own it and wanted to try it for the heck of it. When I finally got it, I don't think I even made it past the first stage. I knew the game was bad, but the controls were awful. I managed to beat Sonic '06, but this, I wasn't prepared for.