I'm looking for a wall-switch (RF) that allows you to switch 6-10 devices
It's another of those things that we have been waiting for for years in our segment... If only they made something along the line of these multiswitches they have in the US in a european 'square format' with e.g. 9 buttons (3 rows of 3, see attached pics):
As far as I know there still aren't any solutions that really fit the bill (e.g. Z-wave/X10 RF).

If you plan on having a lush christmas you could maybe try to get a Lutron system connected to your own domotica system and use one of their tabletop RF keypads.

There are a couple of Lutron HS plugins.
http://www.advancedshading.com/lutrons- ... op-keypad/
http://www.lutron.com/Products/Componen ... rview.aspx