Insignia also makes spyware-free dumb tvs. They're Best Buy's in-house brand, which means you can at least get them in all of N.A. (maybe the same for Sceptre, I don't know). The last time I checked, they only had models up to 43". Probably meets the demands of the kiosk-mode market.
Well, there is Sceptre. Unfortunately they don't seem to be available outside US.