Hi
I’d buy a microphone to record my exercises (and the amount of air flow that I miss in the embochure 
)
I found these two microphones that seem to have good ratio cost/tech features
JTS cx 500 fma
http://www.jts.com.tw/english/products/detail.php?fid=1&subid=5&pid=43
T.bone Ovid System CC100
http://www.tbone-mics.com/en/product/information/details/-768c92f332/
Did somebody try them for a comparison?
Thanks in advance
CP
Both of these are microphones that attach to your flute. There’s nothing really wrong with that, but I think you’d find cheaper (and possibly better) mics that are stand-alone, which will also give you more flexibility.
I think of mics that attach to your flute as mainly for performance, and even there they’re a bit limited because everything you do will be picked up by the mic (unless it has a mute switch), so that means things like tuning to other instruments or blowing out your flute to clear it will be heard by the audience, and sometimes people want to back off from the mic for various reasons…this is harder to do with an instrument-attached mic.