I made a complete switch to UHF last season and kept my FM800 to do some comparing. Now that I have exhausted my intellectual curiosity I am ready to sell it so:

I have a new looking and perfectly functional FM800 with the HSL yagi for sale $700. Basically you get the extra frequencies and the shorter HSL yagi for the same price as an FM100.

I also have the following transmitters. I am not sure what they are worth so I am open to offers:

1 - 216 Powermax Tail Mount. Excellent condition.
1 - 216 RT+ Leg Mount. Excellent Condition
1 - 216 Old Style RT Tail/Leg mount. Very Good condition