I was able to both systems extensively compare.
I make it short:
Edifier: sounds balanced, especially in middle-Breich.
Edifier: is processed valent.
Edifier: bring higher sonorous bass over, due to 2 passive membrane.
Edifier: bass reproduction rather crisp, yet deep.
Edifier: currently at Amazon 432.38
Logitech: heights are present, the middle are missing.
Logitech: Bass suppressed at the bottom more, due to bass reflex system.
Logitech: bass dizzy instead crisp.
Logitech Digital decoder already installed !!!
Logitech: currently at Amazon 264.64
Evaluation:
Movie: Logitech
Music: Edifier
Game: Logitech
Reason:
Yes, Edifier sound a lot better, no question. However, no decoder is still installed. That is, if you really spatial 5.1. Want to experience Dolby Digital (DTS) sound with movies, you need an external decoder station example of devil (179.99). Exactly this digital decoder station is installed already in the Logitech Z906. Ie it is offset by a price cost of 264.64 (Logitech) and 612.37 (Edifier + decoder).
Conclusion:
Anyone watching movies and games would, the please grab but the Logitech Z906. Unfortunately, he has a loss in listening to music a little sound. Who wants to have a balanced sound around in games, film & music, please reach for the Edifier, but because you have to give more than 600 (more than double) put on the table.
In E (Edifier) and L (Logitech):
Sound: EE
Processing: E
Funktionsumpfang: LLL
Price: LLL
Edifier: 3 points
Logitech: 6 points
The value of each point is up to you.
-> I have chosen for the Logitech Z906 and do not regret this decision!
VG