My in-laws helped pay for a large portion of my wedding last year. As such, I want to do something nice for them, and send them off to New York for a week.

They've never flown a flight longer than an hour, and my mother in law has minor health issues, so I want to book them in a comfortable business class.

Here are my choices:

I have about 150k in BA miles I could use to book on AA.

I have about 200k Amex MR points I could transfer to any of the partners that fly LAX-JFK (or nearby airports).

The trip would be sometime in May 2012. Of my available choices (basically, any MR transfer partner), who offers the most comfortable J cabin?