Have the Z623 for more than 3 months and I'm still excited. Has replaced this system my Z2300 2.1, which I use from now on the laptop. The Z623 I use exclusively on TV for television and for the gaming console. Since the mid of the Z623 a bit better, I decided to operate the TV. In terms of depth and bass, the small subwoofer do not need to hide before the Z2300.
For this price there is no better alternative to the Logitech Z623. Will buy it!