I just installed knobs, back plates, and pulls from KBHardware.com. Very reasonably priced (comparable to Home Depot) and much wider selection. Also delivered very quickly. A lot (but not all) of the lower priced cabinet hardware is surprisingly nice quality. I was replacing existing hardware, so it was easy.
I've done lots of home maintenance work, but I would not risk making a mistake on cabinet doors, especially since decades of home ownership have taught me that if your husband is adamantly opposed to something, he'll find a way to hate it and will take it out on you. This is why God made handymen.