I would like to be able to run my TV, stereo and satellite box off of an inverter for those few times I camp without electric. I'm not interested in going the solar panel route at this time and have been told several different ways to accomplish this and wanted another opinion on the following: Use a 300w inverter which plugs into the 12v outlet next to my TV; or use a 600w plus inverter mounted close to the batteries and plug the main RV power cord into the inverter with an extension cord. I have two 12v batteries on the RV and can recharge them with my Honda 2000 generator and a battery charger. Could I get by with an inexpensive standard inverter from Costco etc. or should I spend the money on a pure or modified sine inverter?