110 volt TV, vs 12 volt TV?

The problem with the 12v TVs for dry camping is that they all are energy hogs, for whatever reason. We have had a Vizio 22" that only consumes 21w, IIRC. We ran it on a small inverter and came out way ahead, watt-wise, versus a typical 12v TV. We have a standalone DVD player which uses an additional 6w. Now we are buying a new, small Class C, and we did not opt for their 12v TV. Instead we bought this Samsung, which uses a 12v brick. We will adapt it to a cig lighter plug, and won't even need the inverter. Its draw is super low too.

http://www.amazon.com/dp/B00BCGRX9M/ref=wl_it_dp_o_pC_S_ttl?_encoding=UTF8&colid=3O6SGW9G6LSB5&coliid=I1HVENU0617M3A