I don't have much idea about screens, and I will be looking for one in a few months. But, I thought of this general advice to myself and to everyone else interested in screens.
Irrespective of how well you care for your screens and look after them, in some 2 years or so, the screen will lose it's whiteness and get smudges/stains of some kind. The best will be change the screen, say once in two years. Given this assumption, it is better to look for screens that do not cost too much.
Projector Central has a lot of details on screens, though mostly on the ones that are available in the US. many of them are available here also today, though they are expensive. Best would be to understand the technology and look for a Indian equivalent.
If some one can do a bit of work and explain the screen types and what they mean, it will be great. My apologies if someone has already done that.
Cheers
Never had any issues with screens , have been using pull down screen since 10yrs only reason i changed it only once was to go for a bigger screen