He prefers instead K740 K800

I've been thinking long whether I here the K740 or K800 to buy me, because I really wanted to have a backlit keyboard.
The most important difference between the two keyboards is indeed that the K740 wired derives its power and the K800 for its wireless connection via battery. Since I run my computer for several hours a day I decided against the battery. The K740 has also to my liking what you see is a totally luxurious design with the transparent border perhaps not directly to the images immediately. The lighting has 3 different intensities and "off". Everything is very well lit, except that only the special key icons are illuminated in the F key bar not but F1-F12 but I did not care. The keyboard is more difficult than you think, and therefore makes a very high-quality impression, as is the quiet typing :) Anyway, a strong buy recommendation on my part