In my opinion, the best watch for orienteering / running is the Garmin 620. It does almost everything anyone in our field could possibly want. When I was looking for a new one, though, the concern was that the 620 had pretty terrible accuracy, but I believe that has been fixed through firmware updates. The 620 I think has been around for two years now, which means that its also possible they're coming out with something new, which would tick me off if I just got a 620.
The Suuntos are nice, but don't vibrate. That's a non-starter for me. However! The Ambit2 is a pretty solid watch, and since they're on to Ambit3 (which doesn't have any huge upgrades), you may be able to find an Ambit2 on sale for a real good price. Just make sure you're clear on what model you're getting, so there are several types (2, 2S, etc...) and they do distinctly different things.
I have the Polar V800, which has plenty of nice features, the GPS is pretty accurate, the screen looks great, but, as I'M SURE you've read from my log, is missing some pretty obvious features that drive me bloody insane. How is it possible that you can program in an interval workout, and then it doesn't take laps at the start and end of each interval? That's crazy!
However, if you don't want to spend crazy dollars, I do think that the step down model of Polar, the M400, is better than even that fancy new 225. I think the 1-second recording is totally worth it, myself. I'm also not totally convinced on that optical HR thing, but this is based on precisely zero evidence.
has the most ludicrously in-depth reviews on this subject, jos haluat.
Or, I have an older Garmin 610 with Alzheimers if you want that.