Glass vs. Polycarbonate Greenhouse - Which Is Better?

Hello Trevor ,my greenhouse is polycarbonate,I am pleased up to now ,it was cheaper than glass ,but although it has two windows it tends to get a lot of condensation on the roof,which in turn has lead to a bit of blight on my tomatoes .This is my first year with this greenhouse, so is it a one off or am I likely to have this problem in future years ?

Thank you for this quick video.