Celica Forums General Discussion General Best winter paint protection?

Winter is not far off and I was wondering what advice or experiences other Celica owners had to offer for the best way to protect their daily driver paint job through the winter months.

Wax or polish? Meguiars, Zaino, or Zymol?

My previous alltrac was a daily driver, even in winter. I wax the car several times in November to make sure that I got several thick layers of wax on the paint. The paint on my car was original 13-year-old and it was perfect before I sold it.
I did wash the car in winter, especially undercarriage. We use salt here in Boston.
Now, with the current car, I just garage it.