Have a look at this thread, especially if you ferment in buckets.
I bought a 200 and 400 micron strainer and I've been using them for a couple months. It's been great so far; I have to use them both when I brew with a lot of hops, but my fermenters have very little trub.
I cracked open my first strained beer last week and it was great. The best part is I don't have to worry about hop bags anymore unless I'm dry hopping.