does anybody here use legere synthetic reeds?

If those are the ones that look like wood but are plastic then yes I have.

Been playing Pop/Jazz/Classical for 40 years although, in my opinion, they work very well although better for classical/band work. If you want a traditional sound from the horn, great. If you wish to develop your own signature, you may want to stick with wood, finding the "right" manufacture/style/stregnth in combination with the "right" mouthpiece.

If your looking for a reed that lasts almost forever, the initial cost is recooped in no time. If you do a lot of band/marching/concert work, they take the guff.