I do grow Pray Without Ceasing and have to say it's worth every penny you will pay if you are able to get it ... especially if you are planning to hybridize with it. I bought All Things to All Men (big Emmerich fan here) because Karol said you would never need to buy another daylily - it's that good. Well it is an extremely good daylily for edges in particular but it is eclipsed by PWOC.
I also grew Lilac Lollipop for the club. There are no seedlings out of it yet, but it's a really, really nice plant.