If we were talking about 18A/B on the 77W this would be a no brainer. I recently had 18A/B to myself and it was as comfortable as domestic C. ^
The main benefit of the bulkhead row on the 763 IMO is that thereŽs no seat in front of you reclining into "your space", leg room probably is 3-4" larger, but not that a huge difference.
If you want to spend the money, IŽd probably recommend the bulkhead seats over the exit row.