As has been pointed out above, the axes you mention are very different instruments from way different builders.
I believe Kathy Wingert is solo. SCGC is a small shop. Thy both have stellar reps.
I believe many if not most builders get better as they build more instruments. Just makes sense. We play better the more we play and practice, right?
But these two builders older stuff should really be FINE.
I can tell you John Kinnaird continues to build better and better guitars. IMNSHO
I just got my #5 Custom JK, (#160) and it is the best instrument I have owned yet. But John's all have been spectacular, even #99 which I bought used here on AGF from Mike (who is selling it again, to finance his latest Custom from John.). Repeat customers are always a good sign!
Look on the FS listings, if you want to find a Killer 000-12c!
Best on the quest!
Paul