bulkhead
good:
bulkhead so no one leans into your space.

bad:
briefcase etc needs to go up during takeoff/landing vs under the seat in front.
increased J cabin traffic to and from Lav/service so curtain movement can be distracting

my preference:
last row of J on A side- wall behind is nice separation from Y class cabin; less traffic passing

non issues for me:
don't use IFE so monitor access is not a factor for me