Yes I said it, ARMSTRONG! The brand that you thought that i would never write about. However, the day has came. Armstrong Bathroom Vanity Cabinet manufacture builds a lot more then just vanity cabinets, the specialize in a large range of home improvement items.
Their website has an exelent search feature that allows you to create your own cabinet. I must warn you, the site is large so here are some quick links!
Bathroom Vanity Cabinets
http://www.armstrong.com/rescabam/na/cabinets/en/us/bathroom-vanities.html