I'm surprised daffodils are a problem; most have a low zone rating of 3 (Trumpets, large flowering, small flowering, poeticus, split cups). Good drainage I'm assuming. Do you cut the foliage back instead of letting it lay till brown? Plant them at 3 or 4 times the bulb's height?
Some daffodil toughie's might include Mt. Hood, Ice Follies, King Alfred, Bravoure, and Saint Keverne.
Tulips, probably your best returners are the Darwins, ex.> Banja Luka, Giolden Apeldorn. I've heard some of the specie/wild tulips return regularly, Tulip Tarda has for me.
If I think of something else, I'll post again.
