Small inverter or 12 volt tv?

I just bought a Samsung 24 inch tv that I really like. It has the option of playing video straight from a flash drive, an option I really want. I had trouble finding the right size barrel plug - see this thread.

So, my options are run it off my 2000 watt inverter which will suck more juice than I like, use my small 300 watt modified sine wave inverter that I can plug into the 12 volt plug in the rv - just turning this inverter on without a load causes the lights to dim momentarily -, or return this tv and purchase something else. I'm leaning toward just sending it back, but I would like to get a few other opinions on the matter.

Thanks in advance for any advice.