Welcome to the Daylily forum! I also started with Stella as a first purchased daylily. Bonanza was a gifted plant. 10 years later and still finding new ones that I want to grow.
If you like red, Red Volunteer has been a regional favorite for years! Plus it multiplies well.
Webster's Pink Wonder does really well for me.
Lies and Lipstick, Painted Bunting, All American Chief, Creature of the Night. Just so many good ones
If you get a chance to tour the ST Louis Botanical garden you will really enjoy their collection! It is worth the drive