I have to drive from Phoenix to Seattle around the weekend of Feb 12 ; planning 3-4 days. My question is about the scenic route :

I know I could just take I10 to I5 and that would be easy and fast. But it's also very boring and I've done it a million times.

I'd love an alternative on the east side of the Sierra that's more scenic or just something different. Some options I've spotted are :

93 through Vegas to NV 318 back to 93 to Twin Falls to the 84 to Seattle

17 to 89 through Flagstaff, to I15 in Utah either via the 389 or taking the 89 all the way to the 70 (and then the 15 to the 84)

Anyone familiar with these routes that can advise? Is one more interesting? Also is there a way to route so that I avoid the worst of possible snowy back roads?

Thanks