Martin, you can compare the Neutrons ui with Spark, not Zebralight. Only thing that is equal with ZL is activation of firefly.
Why should I buy a Zebralight SC62 Cool White?
I already have the SC52 L2 and SC600 MKII both in Cool Whites.
I can't see any
If it finally works.. Here is a link to pictures I just took of a few random things with glow tape