Speed Queen Front Loader vs. Whilpool Duet WFW94HEX?

I am in desperate need of a new washing machine. My 15 year old Kenmore Top Loader w/ agitator broke and I wanted to get a front loader. Does anyone know which would be the best? I like the speed queen because it is commercial grade and built to last, but only 2.84 cu. ft. and more expensive. The Whirlpool Duet is 4.3 cu. ft., but probably not as well built & is less expensive. We are a family of 6 and I would just enjoy doing larger loads, but I don't know if it is worth it to sacrifice quality for a larger size. Any thoughts or advice would be greatly appreciated. Thank you.