I know my parents used Singapore airlines Business class and were very happy
I go economy but have always used British airways and Qantas for years..... This next trip. one way back home to Brissy I am going economy with an airline called etihad... I think its the new emerites... Travel agent recommended them as they are have a new fleet of planes and go our of their way in Customer serivce to complete well with the big airlines... they may be worth a look up on google.... I found last few trips with B.A and Qantas their planes were tired looking, 2 of our 4 tv's werent working.....
So sorry cant help as I personally havent been business class... But I can understand why you might like the comfort with a small one! We have done the trip from Ireland to Aus 5 times with 2 kids... Good luck