No significant difference in my opinion. I usually book whatever is more convenient in terms of schedule. The wine is better on LH though, they (generously) serve from big bottles and I rather enjoy the German Riesling - much more so than the "La Vieille Forge" varnish remover AC serves in small plastic bottles. Otherwise, food, confort and IFE is more or less the same.

You will pay high YQ on both of these carriers btw. Look for flights on SN or LX, though I am not seeing any availability for these dates on most routes on these dates.