Truthfully, I'm finding the Phals, Cattleyas and Dendrobiums (three of the most common found at the big box stores) are all very easy to grow. Sometimes you just get a dud though, ya know? I have two Phals (moth orchids) that just aren't pulling through too well, but all the others (even the half-dead, super-sale ones) are thriving. Don't be afraid to give them a shot. They are all beautiful, and very fulfilling to grow. Especially during bloom time! Jump in with both feet; don't be scared :) You'll be glad you did.