We have been using a Samlex pure sinewave inverter over the last few years and it has been reliable. With what you plan to power I doubt you need the full 800 watts that your prior inverter provided. Our Samlex is 300 watts and powers our 40" HDTV, HD Satellite, sound bar, and Xbox dvd/game player in our rig's entertainment center. Amazon, theinverterstore.com, and invertersrus.com have plenty to chose from. Although I have used a modified sinewave inverter to operate the items you outlined, it is worth paying a bit more for a pure sinewave inverter since they will not have any issue with whatever electronics it needs to power.