I bought a Vizio back in 2006 that is still running today. It's now at my parents' house but runs as well as when I bought it.
Unfortunately I also have a modern Vizio I bought for the guest bedroom. That thing is a piece of shit. It's just ridiculously slow, sometimes won't display the picture from an input signal, and software updates break stuff all the time. Before I bought it I hadn't ever bought a cheap "smart" TV but it's been worse than I imagined they would be.