I had septoplasty about 13 years ago. I had major sinus infections before it, and afterwards, have had far, far fewer of them. They had to shave off some bone, but did not use any type of plastic. I had my nose stuffed with cotton overnight- went back the next morning, and they took it out. Recovery wasn't too bad- Vicoden and in bed for a week (I might have milked the in bed part, though- I stayed at my mom's and was pampered!)
All in all, I'm so glad that I had it done- I feel so much better now.