thanks for the nice replies everyone.

KL offers a solid product in Y that I would definitely recommend. Yes, the seat pitch isn't great, but it is not that different from any other Y seat across the pond. My flights didn't have the new seats with the headrests, so can't comment on them.

Brettee---You're right. Buying the roundtrip bus ticket saves you $4. I have a fear of commitment though, and wanted to keep my options open for the return.

AAPlatinum---I shied away from the subway just because I've heard that sometimes you can wait forever for the connecting bus. Regardless, it's still the cheapest way to get to JFK. I'll probably try it next time.