Appreciate all of the replies and insight into my options, and some others.
I had forgotten about the no state income tax thing in WA, thanks for reminding me. That is huge. Sales tax being roughly 10% here and in Colorado, that's a wash.
Keeping this gun related, I don't see needing to do anything class 3 in the future, but it's a sign of a pro-gun state.
And I found the CCW permit simple and affordable to get, much easier than Colorado when I lived there.