The Yongnuo set works fine for me, and it´s cheap enough to occasionally break and replace. That said, I´m still using the first set I bought. Almost 6 months ago.
I used youngnuo RF 602 set for very long time and never had any issue with them. Just recently picked up set of RF 603 and same happy results. Hit to about 110 meters and had never misfired on me. Build is pretty good in my opinion for what you pay and they are very easy to replace in case something happens - inexpensive
