They're not "Ear buds" per se, but I use these wireless headphones with my Droid X every single day:
Amazon.com: Sony DRBT21G/B Stereo Bluetooth Headset: Electronics
They work great with the Droid, but the Play/Pause headset button tends to fight conflicting applications, which is frustrating. If I'm listening to a podcast in Doggcatcher, and then later on I'm listening to music using the stock player, and try to use the headset button to pause the music, it'll more likely start up another podcast than pause the music I'm listening to. A little frustrating.
Anyways, the quality on my headset is nice, I'd recommend it. I get about 8-10 hours on a single charge.