gwaldoI actually have both of those sets. I put the Vortex set on my Hubble's CODE keyboard, and my Ducky Shine came with the Ducky set.
In my opinion, the Ducky set looks much better on a backlit keyboard compared to the Vortex set. The lighting is more even across all of the keys. The Vortex set I have has a bit too much of the translucent material on some of the keys, turning the legends opaque. However, both of those sets are decent choices.
I added some pictures to give you an idea of how those two types differ from each other and from a laser-etched keycap.