We are literally just back from 6 nights in our brand new Kampa Studland 8 Classic (polycotton)
It's our first family tent, and it was a very very windy and cold trip (north of scotland)
It did seem quite airy (good in summer, not so great in spring/autumn.) and it did seem to keep the light ( and presumably heat) out reasonably well in the sleeping pods. (Toddlers slept to 8.30, which is previously unheard of)
The tent stood up brilliantly in the wind and was a LOT less noisy than the nylon one we borrowed last time we went camping. It was quite rigid and felt safe even in the wind, although consider getting the vestibule as when the wind changed direction the front section was at risk of becoming a windsock.
You can also choose to put up 2, 3 or 4 bedroom pods, and it is very very spacious. I love the layout too, especially good with kids as at night you can sit quite far away from the sleeping pods.
Downsides: It is pricey but we found it half price online. It needs 2 people to put up. It is more difficult if it is windy when you put it up or down, but i suppose that is the same with any tent. Overall a great buy and I'm glad we spent the extra to get the polycotton version .
Hope that helps.