I agree, you should definitely go check out the campuses! I didn't expect to enjoy my time in Pullman as much as I did, but the school itself and the town were just wonderful. It is my IS so it's my #1 for financial reasons, but after I visited I knew I would really enjoy attending. On the other hand, Oregon has been my dream school for years and the tour just cemented that. You should really visit if you can! I was not enthusiastic about Washington, but after the tour I had a complete 180 in my thinking and I'm totally sold now.
As far as programs... my feeling is that they are pretty similar. The vet hospitals were both great, great technology, they seemed to have a similar case load and saw similar species. Washington was a bit larger than Oregon, but it is a bigger school and they have more students so I felt Oregon's size matched its student body. The staff at both schools seemed extremely invested in their students.
I do like Oregon's smaller class size, I think I would do better in that situation. Newport is on the coast and only about 1-1.5 hours away from corvallis so it would be pretty convenient for weekend trips. There's also a marine center there and I believe the school works with them so there would be opportunity for marine stuff if you're interested in that. They seem to have electives and rotations for zoo/exotics/wildlife too. I completely love the town as well.
Admittedly, I haven't done as much research on Washington...
😳 On my tour they showed me the exotics ward and it seemed like they had adequate options as far as electives and what not for those interested in that avenue. I saw a baby zebra when I was there and they mentioned they have a great repro program. WSU's facilities seemed a bit "shinier", newer and larger.
So basically, I'm no help at all

Are you IS at one or the other? If you are, you should focus more on that school. Do you have any specific areas of interest? That could affect your decision too (I'm probably going into small animal, so that may be why I felt the programs were very similar). I've definitely had the same dilemma and I've decided that they are both great schools that I'd be proud to attend!