Looking now at the specifications I see that the 300T is 14mm thick vs the 50th anniversary which is 13,5mm including the crystal. So pure case thickness is almost 2mm difference which I can imagine would do a lot for the comfort and wearability.I've only tried the 50th and vintage 300T, but the 50th hugs the wrist, whereas the T sticks up and feels a lot thicker. Probably different for different wrists or tastes, but for me it was a pretty huge difference.