If you choose a vinyl patio door be aware that while they are easy to install, and are overall pretty durable, they do require some upkeep.
These doors rely on a caulked seal to keep elements out of your home and to prevent leaks. This seal can wear down over time and needs to be replaced every few years.
If you start to experience any condensation on the glass inside your home, or find a draft of wind coming through the door, is may be time to caulk the door. Luckily this is a cheap easy fix and can, as well as should, be done every few years.