I'll be extending a bed this year and plan to add several bearded irises, some roses, and a few peonies. This is where I'll want some nice dark colored ones, and I'm open to some doubles, anemone form, single, and semi double (I prefer varieties with strong stems that don't flop because I'm dreadfully lazy when it comes to providing support). Yellow or cream stamens or petaloids would be fine.
What are your favorites that fit that description?