The business seats (Sky Suites) on JL are really great with the (almost) unrestricted room for your legs and direct access to the aisle for everyone. There's always a chance that the flight will get too warm - no individual air vents - so dress in layers, but my flights were always at a comfortable temperature. Service is usually flawless and the selection/quality of food is good. The only points I'd take away is for the weak selection of entertainment options - the only field where AA takes top marks here.