I started out way back with Primestar (Anybody remember them?), Dishnetwork, DirecTV, and now Voom. I also have 950/755 combo for about two years now. As far as sound quality of above DBS concern, they are fairly equal, not great but decent enough with Voom has slightly better sound than others. If you want to enjoy most HD choices, Voom is the best for now. Although some will argue that what Voom offers is not quality HD programs but still they have the most HD channels available currently. I only had Voom in my system since July 2. They still have many growing pains compare to more established DBS providers out there but I am willing to wheather out their initial problems to be able to see more HD programs in the future. If you want to check out what they offer currently, look into their website www.voom.com and/or search the "Voom forum" such as www.google.com and you will be able to see several different discussion forums regarding pros and cons about Voom service. If you have current HDTV and HT setup in your home, you will love Voom's HT programs offerings and their decent sounds. BTW, Voom's STB(receiver) does have both coaxial and optical digital outputs.