Finally decided on buying the K5 (RGB / blue switch) keyboard after fully enjoying the original K1 Keytron, before it was named Keychron - got it on kickstarter long long long long ago in 2018?? Unfortunately, the switches and keys stopped working and became sticky.. no matter how much I cleaned them. So sad to throw it away.. but thankfully I found this one.

Also chose this version because I enjoy the RGB lighting and always prefer mechanical keyboards where the lighting shows through the alphanumeric keys. I notice the lighting on the other keyboards only show between the keycaps so that's why I didn't pick them.

Unfortunately, they do not have any other colours for keycap sets apart from black and white. I see their keycaps for other keyboards such as the unicorn, developer, player, ocean, etc and I seriously wish they could add some for the low profile K5's so I can buy 2-3 different versions.
But these colours are all non-shine-through keycaps. If they make other colours for the K5 low profile shine-through caps, I would definitely buy more!

I own both the low profile aluminum body K5 (browns) and the traditional aluminum body K4 (reds). I like the feel of both, though they are quite different. I will say that the low profile K5 was SURPRISINGLY quiet and ended up being the keyboard I decided to bring into the office. As someone who spends a majority of her time typing on a laptop, the membrane keys to the low profile K5 was an easy transition and overall, I really think it's an excellent keyboard for the money. However, I have two coworkers who purchased K5 SEs and noted that theirs came with collapsible feet. I cannot, for the life of me, understand why the more expensive aluminum body K5 does not. Without them, the keyboard actually tilts forward when placed on a flat surface. To remedy this, I bought a keyboard stand and a wrist pad to offset the stand. This was all super annoying for such a small, overlooked detail. Taking a half star for that, and frankly, I could have returned the K5 for a K5 SE.

If you are looking for a keyboard that you can work with late at night...
It is better to just get a white one which will be nicely visible in the
IPS monitor's light.

If you will go with K5, prepare to learn that:
- Bluetooth is actually terrible.
This keyboard could be good if it had its own receiver.

- Most eye-catching are the switches underneath the key caps.
'+' and 'enter' switches on the num pad are even turned 90° just to make
sure that this is what will shine in your eyes instead of the key symbols.
It can be fixed by painting the sides of the switches black.

- The brightest thing when wired is the battery indicator.
It would be nice if there was a way to turn it off, but there isn't.

- Key blocks are too close together, most noticeable right arrow and 0 from
numpad. You can buy beveled keycaps that solve this problem, but they are
not compatible with back-lighting, and paying another $30 for something that
should be the standard just doesn't seem right.

- Light bulb key cannot be remapped to anything else, similarly the mic key next
to it, from the three only Print Screen can be actually utilized by your system.

- If you would like to find keycaps that have the proper F keys instead of the
silly icons... you won't.

- Original keycaps are poorly visible without back-lighting even during the day.

Good things about this keyboard are:
- it is actually pretty quiet (i used the silicon rings though)
- the frame is nice
- the switches are good
But it is hard to enjoy any of it when the keyboard disconnects from Bluetooth
(turning the sleep mode off won't help you one bit).

I decided to buy brown. I'm very satisfied that I pressed it. Premium material quality I really like it, especially LowProfile. It makes my use and layout simple.

I didn't realize how much I hated typing on my old membrane keyboard until I started using my new K5. What a magnificent difference! I got the Gateron red switches and it's such a pleasure to use. The feel of the textured concave keys are amazing, and it's barely louder than my old membrane keyboard. And I love the minimalistic design of the K5; the beautiful clean lines and space saving low profile size are just wonderful. Cool lighting effects too.