JLCAM!
I started with Stella too, and never looked back! Today I love UF'S, although I won't turn my nose up at any daylily!
Here are some of my favorites from my garden;
Instant Celebration, not a UF but an absolutely amazing daylily that blooms it's heart out every summer!
Articulate Matrix
Purple Kaboom
These all grow well in my 5b garden and I love them all!
Also Harvest Moth
And Heavenly United We Stand.
Static Shock.