I think the 750VA is a great fit, especially if you add a TV, receiver, and some other small hardware. You never want to have your UPS running at 90% of capacity, this makes them unreliable and will lead to early failure. I use a 1000VA to protect my stuff. I have about 20 minutes of run time, surge protection and power filtering. If you have a better UPS you don't even need to have a surge protection in the line, the UPS will take care of all of that.