I have (so far) only two:

• My daily driver is a Keychron K2, which I use to work (from home) and on my personal computer as well
• I also have a Keychron K3 to lug around for when I need to be in the office or travel. I used to take my K2, but it added weight and bulk to my slim backpack so I purchased the low-profile for that.

So virtually 100% of my computer time is on a mech keeb.

I'm a software developer, so I'm typing a lot most of the time. The high profile K2 (which I use most often, about 95% of the time) helps me keep a better posture and prevents wrist injuries. I had a severe wrist injury a few years ago, when I worked directly on the laptop's keyboard without a mouse, it took me over a month to recover with physical therapy. I'm much more aware of my ergonomic arrangement and posture while working since then. Also in my setup:

• Sit-stand desk
• Two 28" monitors on a monitor arm, arranged horizontally, set up so the first third of the monitors from the top is aligned with my eyes
• Soft wrist rest
• Keyboard, wrist rest and mouse over a desk mat (currently a little to small, I will need a larger one)

In my pipeline to buy/build:

• Larger desk mat (accepting suggestions, nothing too flashy but I do like cool designs)
• Macro pad (looking to build my own but also looking at prebuilt ones)