"many people say more than 2 Meters is no good."
That is a bunch of bologna. I have been using 22 foot runs of speaker cable in my main system for over 21 years and my system sounds killer. just for the heck of it, 5 years ago I moved my equipment closer to my speakers and tried a 5 foot run of the same cable. After going back and forth over a couple of weeks and with a few of my audio buddy's listening as well, we came to the conclusion that there was absolutely no difference in sound between a 5 foot run and 22 foot run.