It just depends on what area you're in. Hagg, Detroit, most of the Mt. Hood lakes are all fairly well stocked. If you're not looking for stockers, there's lake Billy Chinook, I've heard great things about Crane Prairie. It all depends on how far you're willing to drive to chase what you're fishing.
Well I have always had great luck at Pendland lake in the Blue Mountains of Eastern Oregon.... I have heard Wallowa, and Olive lakes are great as well as the Umatilla Forrest Ponds.