Middlefork Miner,
You mention you have tinnitus. If so, stay away from aspirin. Worsened tinnitus is a very common side effect of aspirin, even baby aspirin. Switch to Tylenol or Advil. It will probably make a noticeable difference.
I have friends that saw good improvement in their knee pain by using Tart Cherry. It didn't seem to help me much, but I was trying the capsules. I think I will give the not-from-concentrate juice a try.
