Neither! I have all plastic vivariums from BARRS. They are great, don't weigh a lot, hold in the humidity, etc. You can have problems with the wood warping due to the wetness of washing it if you don't seal it extremely well. Glass doesn't hold in the humidity very well. And they both weigh a lot! So check out the cages from BARRS, Neodesha, Vision, Boaphiles, and several others.
sue frederick