
Wooting
80HE
Elite gaming performance, deep customization, but divisive typing feel.

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Make sure you get the hot swappable version, a soldered board is 2025 is practically a war crime.
It's Logitech, so no. Banana is a slightly heavier and smoother tactile switch. For the K4 you need to get the RGB backlight version with the hot-swappable switches. The default is soldered which is practically a war crime.
Avoid epomaker and royal kludge, they are generally awful ( though there are exceptions like the galaxy 100) . If you are in the US, and keep an eye out, the keychron k4 rgb (the second Gen hot swap version) will often be used for under $40 sold by keychron. I've bought two like that in the last year as gifts and they're a damn solid board for that price
If I may give you a suggestion towards reliability rather than higher specs, my current setup entails a 96% size hot-swappable keyboard (Keychron K4) and a mouse with optomechanical switches (Logitech G502X, wired version). The K4 you can swap an individual switch with a new one should one start to fail The G502X works in such a way that the currently way too common misuse of microswitches isn't a problem (voltage and whetting current too weak, leading to double clicking and the like down the line) because the mechanical switch is only there for feel, while the actual switching is performed optically (piece that interrupts a beam of light).
I have a Keychron K4 HE, and it's by far the best keyboard ive ever owned. Just recently got a Logitech Superstrike, and it's genuinely insane. Got glass skates on it aswell, and it's the best mouse/keyboard experience ive had in +25 years of FPS gaming. I wouldnt really recommend spending a lot on a mouse for SC only. A high quality keyboard is something that will last +10 years if you take care of it - a mouse definitely won't. Save the mouse budget for some VKB/Virpil joysticks and you will be spending your time in SC as far away from your mouse as you possibly can.
2nd this. Got the Logitech MX vertical and keychron k4. Been my setup for few years now and it's been awesome.
I bought a keychron k4 last week for CS2 as well, and I'm blown away by the quality and features for $140. It can also be wireless which I love, but there are some nice wired HE keyboards out there for $60-70 if you look. The "budget" brands have come a long way. If you want a 60% keyboard there are even some wireless ones out there for like $50, you just need to do a bit of research. YouTuber Miggs has some helpful videos out there. For the record, low actuation and rapid trigger is a game changer for CS2. You really can feel the difference in your movement when peeking and jiggling.
Miggs actually recommends Mchose as his top budget brand, but I have no experience with them. The keychron quality is so high imo that I won't even disrespect them by calling it a budget Chinese brand because it is extremely well crafted, and the web software is also top notch. I would not compare yourself to Donk, he's in a league of his own. He also likes to swing wide, which will be less of an issue using a mech keyboard. The tighter peeks are where you're going to see the biggest difference with HE. Also, a lot of pros are switching to HE, so keep that in mind.

Wooting
80HE
Elite gaming performance, deep customization, but divisive typing feel.

AULA
F75
Budget king for thocky sound, but layout and software flawed.

AULA
F75 Max
F75 value with screen, but wireless and key layout issues.

AULA
F99 Pro Mechanical Gaming Keyboard
Value full-size with numpad, great typing, but poor software.

Keychron
K2 HE Wireless Magnetic Switch Custom Keyboard
Affordable HE with premium feel, but limited switch options.

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Wooting - 80HE

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NuPhy - Air60 HE Magnetic Switch Gaming Keyboard

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Logitech - G19 Programmable Gaming Keyboard with Color Display

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Keychron - K10 Version 2 Full Size 104 Keys Bluetooth Wireless Mechanical Gaming Keyboard