The only reason I bought the L3 instead of the L2 (I have an L2 behind the TV and I am quite satisfied) is because I wanted a denser lighting than the 30 leds/meter of the L2, and this one claims to have 90 leds/meter. Today I received the strip and saw that it has fewer leds than the L2, and on the box it said 90 leds in total for the entire strip. Both on Skroutz and on the Sonoff website, this strip is advertised as having 90 leds per meter. I wasted 20€ on a strip that doesn't even come with a power supply in the box, while I could have bought the L2 for 15€ with better specs. It's only worth it if you want a strip that can be connected to a laptop or power bank, if you don't care about that, get the L2.

edit: don't even get the L2, the blue one burned out after 2 weeks of having it