What type of headset will work for my Droid X? I'm shopping around for a nice pair of earbuds for my Droid X since I lost my other ones, and I was curious if I could get ones with a microphone to use as a headset.

What do I need to look for to make sure they're compatible?  Are all the 4-pin 3.5mm stereo jacks alike?  If it's iPhone-compatible will it not be with the Droid (especially ones with remote volume buttons)?
Any 4-pin 3.5 mm stereo jack should work fine for straight sound but headsets with controls are a little more difficult.  Many are proprietary.  If it claims to be universal it may work but if it's designed for Apple or Nokia it probably wont.  

Basically, on a 4-pin jack it all depends on which ring the headset maps to which control.  I couldn't find a Droid X pinout diagram but I believe Motorola uses the standard layout.  This site has a pretty comprehensive list of the different pinout mappings and a lot of them are the same but a lot are proprietary.

If in doubt, I'd look for a set advertised to work with the Droid X.