I'm on the fence on this one, because I do have a few that have very nice foliage, including the gorgeous braided Den. anceps , a Paph (which never blooms) and a Phal with variegation, and two colors of jewel orchids.
But the majority of my orchids are not all that pretty, when they're not in bloom. Mostly living outdoors in Florida, I'm sure, gives them more chance to develop marks and stuff on the leaves, hard as I do try to protect them.
