It really depends on what you want to use it for. I have multiple different keyboards for different tasks.

Mechanical keyboards is a huge rabbit hole (reddit.com/r/mechanicalKeyboards).

I split my keyboards up in three categories: writing, programming, gaming.

For gaming i like to have a smaller keyboard with easy reach for all the essential keys. Here i often use a split keyboard or a 60% keyboard.

For programming i dont like too small keyboards (less than 60% is frustrating) and i don't enjoy programming using split keyboards.

For writing i often use 40% or split keyboards.

Currently at my home office i use an Alice-style keyboard from Switch Couture [1]. Here i have silent linear switches (Rosélios [2]). I like the alice-style for my general work, as i both write a lot of emails and do a bit of programming. From time to time i switch to one of my split keyboards, if i have a lot of writing to do. I currently don't have a favorite split board, but i use both Kyria [3] and Lily58 [4]. The stagger is a bit different and i'm not sure which i like more. I have an unbuild Corne [5] that i'm gonna try soon.

I don't often go to the office, but when i do, i take a small 40% board with me. It's a simple AMJ40 [6] that doesn't take up much space. At the office, most days go with in-person meetings anyway, so not much typing is done.

When i'm off work, i usually switch to either a Space65 or Think6.5 V2. Both are 65% from Graystudio [7]. The Space65 uses Holy Panda switches, which are louder tactile switches on an aluminium plate, whereas the Think6.5 V2 uses Gateron Milky Yellows on a FR4 plate, which are much more quiet. If i decide to do some gaming, i usually pull out one half of my Kyria and switch to one of my gaming layers. I have layers for WoW, Diablo, LoL, HotS etc.

I have other boards too, but they rarely see use, as these 6 boards seems to cover my needs.

As i said to start with, this is a rabbit hole. I've spend $3000 on keyboards in 2020, as i needed a covid hobby. I stopped buying new boards and accessories in the start of 2021, as the spending and FOMO got out of hand. Had to go cold turkey.

[1] https://switchcouture.com/products/switch-couture-acrylic-al...

[2] https://zealpc.net/products/sakurio-roselio

[3] https://splitkb.com/

[4] https://keyhive.xyz/shop/lily58

[5] https://keyhive.xyz/shop/corne-v3

[6] https://flashquark.com/product/amj40-40-mechanical-keyboard-...

[7] https://graystudio.club/