Oh, MUST be XLR
Hi George – the best lav in your price range is the $199 Audio Technica AT899 with XLR power module.
Here is an AT899/Tascam DR-100 test – compared to an on-camera mic:
I bought a DR-40 and a terrific used Audio Technica AT835B XLR shotgun that I picked up on eBay for $75. It is built like a battleship and produces great sound. The AT899 is the next mic on my list 🙂
You really can't go wrong with pro Audio Technica products.
Hope this is helpful,