I was fit into my T300 back in late 2021 or early 2022, can't remember for sure, and they have worked very well for me. Of course when the T350s came out, I read lots of reviews and forum posts here and thought they sounded great, but I have never gotten around to hitting them. Now that the new series has been out for awhile, I am curious about the thoughts of those that switched from T300 to T350. I am also very curious about those that went from T300 to the new T200. Thank you!