Oh, funny, my last flight there were no Large, so the FA gave me a M and said I'd be swimming in the XL... M was "well-fitted" on me, but on balance probably better than an XL

Anyway, back on topic, I would say that I prefer the newer version... I was never a fan of the old grey striped one with the buttons and their odd S/M and L/XL sizing. The White Company ones are noticeably "cheaper" (and don't wash as well / last as long), but the sizing and proportions are better. And the latest ones with the dark blue pants and notch on the shirt look pretty smart

And let's be honest, you're not gonna get cotton in business class. I'd rather get these ones, which are at least practical and can be used again after the flight, than nothing at all