I have a Bush 22" LED TV, works off 12v and has done for over 4yrs without a regulated power supply, bought from Ebay brand new but it was a return as no sound so no warranty, I paid £40 because I use the sound from my satellite box straight into the van radio so sound was not a problem, upside is one of the speaker wires had a dry joint on the PCB so no sound out of either speaker, reflowed the joint and it is as good as new, it is 45W so doesn't use a great deal of power, I would never pay the premium for a dedicated motorhome TV, mine has bounced around in my wardrobe for 4yrs and still works perfect and it doubles up as a kitchen TV at home so it really has had 4yrs use