Hwy 2 from Spokane to Everett

The scenery between Spokane and Wenatachee is pretty boring on both 2 and 90 and 90 is a much easier drive in that part. Once you summit past that the scenery on 90 is pretty nice and if you are looking to avoid Seattle you can cut through at North Bend, go by Snoqualmie Falls and hit hwy 2 in Monroe. That is actually a much easier drive than taking 2 the whole way. You didn't say why you want to avoid 90.