Well, I for one have only flown US's 333s in moo-cow class.
I thought they were great. US offers 34" seat pitch in coach- more than anybody else, I think, now that More Room is over at AA
. Conti- my airline of choice- only offers 31" of their Transatlantic 752s.
Service was good- the crews were probably the best I ahve encountered on a major/legacy carrier.
I vote go business, but if you'd rather save the miles, coach is certainly fine.