Are there any alternatives?

The two obvious choices are the Lenovo Legion Tower 5i and the Alienware Aurora R11. The Legion Tower 5i is a good option, though you can’t currently configure it with RTX 30-series cards yet, so forget it.

　　Both the Alienware Aurora R11 and Asus ROG Strix GT35 are both larger and more performant than the Omen 30L, but they’re also more expensive. And nowhere near as good-looking.

　　Lastly, the Falcon NW Talon or Origin Neuron are both great choices, but they’re far more expensive.

　　

How long will it last?

The HP Omen 30L will last as long as you’ll have it. That’s the beauty of desktops that are easily upgradable. Everything can be swapped out, even if you run into technical issues.

　　HP’s protection plan isn’t great though. It comes with only a standard one-year warranty.

　　

Should you buy it?

Yes. If you can manage to find one of the higher-end configurations, you won’t find a better prebuilt gaming desktop.