First,, welcome!
I can't speak to the Soundbite as I have a Cochlear BAHA Device.
I was SSD for three years before getting it this past Dec. Like you, I feel I had too high expectations for it. I am not totally taken with it as some will tell you they are. It gives me sound, as you say, from that side; however, conversation is not that good. If you are SSD, as I suspect,, you won't get directionality from any device that I am aware of due to the fact that you don't have "hearing " on that side so all sound from any device goes to "good"ear to be heard.
Noisy environments are a problem for most hearing devices also.
Just my two cents worth,, I think I would cut my losses and return the device as you know there will probably not be any warranty or repairs in the future,,,,and you could perhaps get something that would be supported in the future and maybe give you better hearing,.,,,,you may be one that likes the BAHA better than I also.
Good luck to you whatever you decide. I'm sure some other Soundbite owners will be posting too.
Jane