HSLD hit the nail on the head. Don't limit yourself. Keeping your search limited to the pacific northwest may lead to corrosion issues that may not be seen elsewhere. Speaking of corosion, make sure to have a complete pre-buy inspection done by an A&P. Older cessnas in particular are prone to corosion because they had no sort of treatment from the factory (also often had bare metal paint schemes).

For some dumb reason when you compare a Cherokee and 172 that have similiar times, equipment and age the piper is almost always a little lower priced. Cherokees also have better useful load.