If you can find an original Glorious [0] Model O, that's a nice piece of hardware. The new Model O looks like it only works with their new, totally garbage Glorious CORE v2 software.

If you never want to change the DPIs, lighting, or button assignments, & etc then you don't need the software... so if what the hardware does out of the box is fine for you, then you don't need to worry about how trash CORE v2 is.

CORE v1 is okay, but still notably worse than the Model O software. I don't know why they farmed out the development of CORE v2 to "the CEO's middle-school nephew who's 'good with computers'", but they did.

[0] ...they were originally called "Glorious PC Gaming Race" (in homage to the Reddit meme), but dropped that last bit from their company name a while back...