I've had 'non rv' tv's ride around in my 5th wheel for years and they still work. Besides they probably experience just as much shock and jolts in the delivery truck.
Even if I have to replace my tv every 2 years I'm still farther ahead and I get something with newer tech anyways. If you can find them cheap then sure get a Jensen but Jensen stuff is bottom of the barrel junk (so is RCA) and I refuse to pay top dollar for it.
I priced the Jensen recommended tv from my dealer and it was almost $600, I bought my 12v Insignia for $79 ( I know Insignia is not a good brand but it's so cheap it's disposable)