What is the best way to deal with imports?

When I was using XCode, I found that I wanted to have most of my headers all pulled in through the precomiled headers file (.pch).

Now that AppCode is so good at managing/fixing imports, I'm wondering whether or not it is better to simply have a much more limited set of headers via .pch and have more invidividual imports in all the rest of my classes.

I'd love to know what other people are doing.