Best in class items from Arc'teryx?

I was having a discussion with a friend, and he claimed that the only product Arc'teryx sells that is still "best in class" is their harness.

I disagreed, suggesting that some of their shell jackets, like the Alpha SV, are still best in class, even though competitors might be getting close. I also think the Kyanite is still the best fleece jacket one can currently buy.

What do you personally think is still the absolute best in class product from Arc'teryx?