Scudpilot
I don't know much about TXC, but I've travelled the pond in Y on Aer Lingus, flown to the middle east in J on EK, LH and F on EK/LX.
The aircraft is pleasant in all classes in my experince, slightly wider than a 76, so feels a bit 'airy' and seat config in Y seems to be 2-4-2 on most airlines.
Enjoy your trip.