I have a small collection of compasses, but the two models I use most often are both Suunto, the M-3 series and M-5SK.

While I have several versions of the M-3, my favorite compass is the M-5SK. The M-5SK is somewhat hard to find, but is basically a M-3 with a longer base-plate.

I prefer simple, base-plate compasses. They have every tool I need in a compass in a lightweight package that easily disappears in a shirt pocket.