I've finally managed to find a supplier of good quality RC decals at an amazing cost when compared to others. They also do my RCbitz decals but have now got a new machine which auto cuts the outline of the decal to less than 1mm.
I've just unwrapped them 10 minutes ago and stuck one on the monitor. I've not tested them for durability on an RC yet, but my first guess is they will be perfect.
They are about 6cm by 1cm so are imo a perfect size to fit almost any RC