When I was looking for boxes for our Toshiba TV came several models in the range. Creative GigaWorks T20, T30 Bluetooth + NFC, Logitech Z320. In the end it was the Creative GigaWorks T20. This was mainly due to reviews and the output power. On Bluetooth I have omitted not all devices for coupling via apt-X and Bluetooth 2.1 with A2DP just did not strike me as useful as. The sound is the price range accordingly. The X-Bass technology does what you want, of course, can not be compared with a sub-woofer, but it is sufficient for the intended application, TV.
+ Value for money + Aussreichender Bass - No separate subwoofer - Until the sound starts to wait a few seconds