Hello,
The RIVA S is handy for being able to throw into a bag easily and take with you, or if you're traveling a lot, or if you want the left/right channel stereo experience. The Turbo X we often see people moving from room to room in their home - But as you mentioned, you may be less interested in the additional volume. The good news is, we do have a satisfaction guarantee, so if you got one and decided it wasn't right for you, you could return it to us within the satisfaction guarantee period.
If you have any other comments or questions, please let us know.
Thank you,
RIVA Audio