Recently out of stock, the ApsenMics.com lavaliers are back and available now for a discounted price (or while supplies last). I've been using these lavalier microphones for months, either with my Zoom H1 or even iPhone. If you'd like to hear audio samples from this mic, there's an excellent review over at their web blog (here).
The Lavalier microphones are available in both Stereo and Mono versions, along with a TRRS Adapter Kit that allows you to use the Stereo LAV with your iPhone or Android as portable audio recorders. With a 14 day return policy if you're not satisfied, and a full 5 Year product warranty you can't go wrong. If you want to capture better audio and don't own a Lav mic, now is a great time to stock up (find it here).
AspenMics.com HQ-S / HQ-M / HQ-SPK Lavalier Microphones