I fly the A330 quite often (AMS-BOS-AMS); more often the -300. Really enjoy this aircraft. On both planes, love 2J; since it is far from the galleys and very quiet. But, the only caveat is since they serve (back to front); you are the last to be served (doesn't bother me that much, though the BOS-AMS red-eye flights are quite short, so that might be an issue for some).

7J (and the entire row 7, first row of the mini-cabin) on the -200 has a very nice "extra shelf" that is quite convenient; as is the "mini-cabin." People seem to stay away from the "mini-cabin," so if it's not a totally full flight, is can also be a bit more empty (most recent flight AMS-BOS was half-full in the "mini-cabin," but entirely full in the larger forward BusinessElite cabin).