I’ve got a Razer Basilisk X Hyperspeed recently. About a month or two ago. Used price for a decent unit (looks almost new) was about €20. I liked it so much, I bought the second one for my workshop / office place. The price was about €12, but it looks more used. I haven’t noticed any real difference between the two.

The mouse is wireless and supports two computers, as it has both Bluetooth and 2.4 GHz dongle. Which is just ideal for our home, me and my wife, we use the same mouse, but just switching the toggle. She works from home, and the mouse is connected to her work-issued laptop via Bluetooth. And the dongle is inside my stationary at-home laptop. That’s a minor feature, but it quite useful. I’d get this mouse even with the dongle being lost, as it’s perfectly good with Bluetooth only. Especially given the price.

Perhaps that’s very individual, but I just love the form factor. It’s a gaming mouse, but it has zero LEDs. And it looks like it worse for gaming to my old wired A4-Tech X7 from the olden days. (Kept it in my workshop office for no real reason, just found it in the pile of old trash.) I don’t care it being worse, I don’t play games. The mouse has some weird mostly unnoticeable lag, like milliseconds, while playing Warcraft III on Linux. The wired very old mouse has no such lag. I have no idea what’s wrong, either the game being run through wine, or that I have QuadHD main display and not very powerful GPU (Radeon RX580), or that I have six displays totally. I casually play with the computer sometimes, as a mean to distract and wind off, so it’s not anything competitive now (was a semi pro gamer in the past). Apart from that there’s no lag in the system (I tested it with Windows, macOS, and Linux), so the mouse is just perfect for me. A friend has multiple generations of Logitech MX mice, and I like mine more for some reason.

There’s a DPI switch, and the max resolution is 16K which must be good. For me that means that it works reliably on any surface. I set the dpi once and forgot it’s there. It has two side buttons, which can be programmed. I assume they can. I did not try Razer Software recently (used it like ten years ago). I know there’s an open source daemon for handling Razer devices, but I did not bother installing it. I just map the buttons to what I need in my Linux DE, Sway. I assume you can program them in that Razer software, if you use Windows or macOS. If that’s what you mean by programming. Perhaps there are some limits to what you can assign to those buttons. In Linux, I guess you can map whatever you want. I just have a script that maps some keys to Warcraft backpack when I launch the game. It returns the keys to defaults when I close the game. This script works with any mouse, and I used it with that ancient A4-Tech one I mentioned. I upgraded it to this Razer one solely because I like the form more. Plus no wire is a bonus tiny little neat improvement. The price was too low for me not to.

I do not know whether this helps, but I do like this mouse of mine. To me it’s just a barebones mouse from a reputable manufacturer with no bullshit (like LEDs I rather dislike) and a pretty good sensor. I have a white glossy table at home, it works very well on it.