The Glorious Model O is quite simply fantastic. It's inevitably going to be compared to the Air58, but it's a comparison that tips the scales heavily in Glorious' favor. For starters, it's impossible to get the Air58 anywhere now, unless you pay ridiculously high prices on eBay or something. In fact, a quick search on Carousell throws up two listings of the Air58 at a crazy S$400.
On the other hand, the Model O is available locally from Xtreme Solution at S$119 and is even cheaper on Lazada. By the way, this isn't some parallel import of the mouse, and Xtreme is actually an authorized retailer on the part of Glorious. The matte versions of the mouse retail at a mere US$49.99 directly from Glorious though, and the company does ship to Singapore, so there's a significant premium associated with buying it locally.
Nevertheless, I think even the local asking price is quite reasonable for what the mouse offers, and the only thing it's really missing is wireless support. Then again, the Model O's cord is so light and flexible that it almost feels like a wireless mouse, so you're not missing out on a ton here. Of course, there are more subjective issues like the mouse's shape and size. It's impossible to have a design that satisfies everyone, so I can't guarantee that the Model O will make you happy.
But for most intents and purposes, the Model O is an excellent first outing from Glorious. The company also isn't given to the same hyperbolic marketing campaigns as Finalmouse. You don't see strange, erratic actions like inexplicably making their Twitter and shop page private in response to criticism, or mini meltdowns about how no one appreciates their "art". Seriously, Finalmouse, you're a business, not a teenager.
From both a product and customer relations standpoint, Glorious checks all the right boxes. It is light, has great build quality, an excellent sensor, and a comfortable shape. Above all, it offers great value for money. I don't know what else I can ask from it, except that maybe it could be a little smaller. That's just my personal preference though, and I think Glorious may have just made one of the best mice of 2019.