Re: WebOS on LG Tvs, tell me about it!
Unless you want cable or satellite, the modern smart TV is a standalone device, with online streaming and audio outputs built in.
The larger top-end monitors tend to be more pricey, often prohibitively so, compared to even middle of the road shart (Freudian slip) TVs. Otherwise not much, just has different features tacked on. For example, most computer monitors either don't feature audio outputs or they're a mere afterthought—not that I'd be using it anyway.