To me, a garden daylily is one that is there for enjoyment, and isn't one that is used for hybridizing. But, all of the ones that I use for hybridizing are somewhat older, but they are just as pretty to me as the newer ones. I have never bought a new intro, and I can't imagine that I ever will. I am not willing to spend the money on them. I have a few newer ones, but they were gifts from very generous friends, or they weren't very expensive to begin with.
At my last house, I had all of my garden daylilies in the front yard, and all of my hybridizing daylilies in the backyard. They were all beautiful to me, but I never used the ones in the front yard for hybridizing. I loved them all equally, but the front yard was for show, and the backyard was where all the dreams lived! When I moved all of my hybridizing daylilies with me to our new home, and left the others, because the house is on the market, and they make the front yard look extra nice. When I decide that I no longer want to use one of my hybridizing daylilies for that purpose, they will be moved to a new location, and will continue on as garden daylilies.