Veebyes wrote:
No harm in being a tad on the large size.
We have a 1000w pure sinewave but we never use it for the microwave or any other power hogs. The breakers for them are turned off when setting up for dry camping.
I mostly dry camp and have found a great substitute for an electric coffee pot.  I also do just fine without using the microwave.  I don't need to turn off the microwave breaker.  It does not run with DC.  
So why do you need a 1000w pure sine wave inverter?  The TV which I do not use, is 12v.  My wife's Cpap runs on 12v.  I have 12v chargers for the computers, camera, cellphones and almost everything else I use.  The only exception is the charger for the batteries for my camera flash.  The few times that is needed, I plug in a cheapie 100 watt inverter.