Nissan Repair: Pathfinder Belts Squeal, power steering pump, squeals

Question
I have a 2001 Pathfinder and have had problems with squealing belts since the first replacement. I have tried every kind NAPA has and am now back to NISSAN belts. I have to tighten them to the point that there is almost no deflection to get rid of the squeals.

Can you recommend a belt that won't slip?

Answer
Factory belts work best on imports.  I would check each assessory for binding with the belts loose.  I would suspect a bad item like a dragging power steering pump or the like.  So, check the assessories to see if any of them are too tight like they are binding up.