Well I wasn't happy with a set of 19 LED with no side LEDs.
I found that you could only see the orange through the middle of the lens and the rest of the lens was red and the orange light looked distant/dim and not immediately conspicuous when in use.
So I ordered a few other sets to try.
< These > The 24 LED 360degrees worked quite well. The whole lens is illuminated and it looks orange. It is far more noticeable as the lens actually changes colour, rather than just burning an orange beam through the red which is not as visible.
< These > The 36 LED 360degrees worked well same as the 24 led but there was a better spread of light.
with both sets I could notice a very slight green tinge with the orange, but I was more than happy with the improvement. The 36 LED type gave the best results and I have stuck with these. Last week these successfully made it through an M.O.T.
I,m very happy.