For Texas eastbound, definitely Club. By the time the meal service is over, you're heading out over NE USA, Newfounderland and the Atlantic. Not much time left for sleeping and you'll want all of it. Arrivals lounge too is a nice touch (skip the heavier elements of breakfast onboard).
First on a westbound to Texas seems very good. Longer flight, daylight, and plenty of time to enjoy to the service.