It depends on your use case and current circumstances. How do you currently game / what system do you use? What is your current TV and what would be the upgrade? Do you have a library of steam games or do you want to get into pc gaming?

I bought one to get access to pc games and some titles which don't need to be played on a big screen and I've loved it so far (had mine for 8 months) but it really depends on whether or not you'd make use of it.