Hey Paul! Nice to hear from someone here in the Spokane Valley. A stone fruit enthusiast to boot. Welcome!
Stan gave you some great advice with Purvis. The descriptions are excellent and he sells scions for grafting (I bought a bunch of them for this Spring).
Here is another great link from @scottfsmith on this forum:
https://growingfruit.org/t/scotts-stone-fruits-variety-experiences-2005-2015/365
He has experience with a lot of white apricots.
As for me, my wife bought this tree from Gurneys. I planted a Hunza for cross pollination. It turns out that we both enjoyed Sugar Pearls and neither of us really cared for Hunza. I pulled the Hunza out and replaced it with a Canadian White Blenheim. Unfortunately, after a year or two the Canadian White Blenheim died and I never got to try a fruit. I replanted last year and I hope it grows well next year.
From what I have been able to read, it sounds like there may be tastier white apricots than Sugar Pearl’s, but I don’t have any first hand experience.
I really like them and the tree sets very heavily for me. I like them so much, I planted the Canadian White Blenheim and I am attempting to graft Afganistan so I can try additional whites. I am also planning on grafting Orangered because everyone raves about it.
Sure hope this information helps you a lot!
Kevin