if your snowboarding is at the level where you can rent skiis and have a better time, then snowbird is probably above your level. It is pretty steep, and there has to be some decent snow to ride the good stuff. However i thought snowbird was an amazing resort and will certainly go there over an over.
Powder mountain, well the name speaks for itself. That place is more friendly to the average rider but it is still just a phenomenal place. I would go to powder mountain again too, that place was epic with the 2ft of fresh it had. sounds like you enjoyed your trip!