Im looking to upgrade my Beovision 7-32 to the Beovision 7-40 , but what speakers should i choose ? I like the design of the 7-4 the most, but can be it used for watching tv and movies, whith no help from other speakers, or is it a mono center speaker for use in a surround setup only ?

The 7-4 is a dedicated center mono speaker and the 7-1/2/6 are stereo speakers that you can use in a mono setup for the center OR as a stereo speaker.

I used to have a BV7-40 with 7.2. Sound was excellent, but I swapped the 7.2 for a 7.4 + BL9s and the sound is superb, a step up again. Much prefer the look of the 7.2, too. If you can justify the expense, try a 7.2 with BL3s?