My best J seat on the E90 is 12A or 12F. Alternate is the next Airbus flt with 2A.
If AC ripped out the pathetic J in the E90 and replaced with E+ type of seat, I would be a very happy camper. Also this would remove the E90 from Transcon contention and return it to appropriate place on the shorthaul mainline. Party like its 1990 (for those to young to remember, AC DC9 did not have J class in the early 90s).