The Orville and Star Trek: Discovery are both basically Star Trek shows that started at around the same time. So far they're both really good, but in very different ways.

Discovery is a tense wartime drama set before the original series. The aesthetic feels more like a Hollywood take on Babylon 5 than Star Trek, but so far the writing and characters are great. It's looking to be the polar opposite of the episodic style of most past Star Trek series. I'm not sure I like the aesthetics of the Klingons in Discovery, but they're certainly compelling antagonists, a fractured empire groping towards unity and resenting the peaceful homogeneity of the Federation.

The Orville isn't nearly as much of a comedy as the commercials tried to make it out to be, but it captures the fun adventure side of Star Trek beautifully, and the comedy and pop culture awareness it brings help it deal with the human side of the characters (figuratively in many cases, but still). Alara, the Chief of Security, is super-strong because her species comes from a high-gravity planet, but when the captain and first officer are captured she gets so stressed over having to command a starship that she throws up.

So yeah. Just like when Deep Space 9 and Babylon 5 were both on the air, my reaction is basically "Hell yes, TWO awesome sci-fi series!"