I have been the owner of a Blackwidow Ultimate (Green - Clicky) for years. At first, it suited me quite well, and since it was my first mechanical keyboard, I loved the sound.
Unfortunately, over time, the "clicky clicky" and the height of the keys started to tire me out. Even with a wrist pad, my wrists easily got tired, as did the palms of my hands, especially when coding.
So, I decided to make three major changes.
1. Switch to low-profile keycaps (which I already liked a lot on my laptop).
2. Switch to non-clicky switches (to calm my head down a bit).
3. Switch to a TKL keyboard (more space - keyboard in the center).
This particular keyboard, although quite expensive, fully satisfied me in all three categories. The keycaps are low-profile and incredibly comfortable to type on, while still retaining the feeling of a mechanical keyboard, regardless of the reduced height. I can confidently say that I noticed I can type much faster compared to any other keyboard I have tried.
I was completely satisfied with the switches. I chose "Tactile" because I wanted to have feedback when pressing a key, but not the clicky sound. It's true that they have a strange feeling, as some say, like there's sand in the keyboard, but I personally liked it and have grown to love it for the sensation it provides. I didn't particularly like the linear switches I tried, and I noticed that I made more mistakes due to the lack of feedback when pressing (except when bottoming out).
The TKL form factor suited me very well, as the keyboard is now right in front of me, without the mouse reaching the other right edge of the desk. The truth is, at first, I often caught myself unconsciously pressing a non-existent right "Enter" key or trying to type numbers on a non-existent numpad. The power of habit... But I got used to TKL within a few days, especially since we don't deal with numbers to a great extent anyway.
Finally, the build quality of the keyboard is *excellent* and gives you a tremendous premium feeling. Its connectivity is flawless, with no delay using lightspeed. It works perfectly for typing, coding, and gaming. I literally felt like I was using a regular wired keyboard with zero delay.
The only negative thing I could find is the choice of "Micro-USB" instead of type-C. It may have been done for cost-saving purposes... but whatever, it's a minor issue.
I should also mention that if you want, you can use the keyboard "wired" by keeping the charging cable connected. It still functions wirelessly with lightspeed, but the battery never runs out.
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** TLDR: A quite expensive but exceptional keyboard that I have come to love, with a wonderful and simultaneously premium feel, comfortable and with zero delay. Definitely the best keyboard I've ever had. I'm writing this review from this keyboard, and my hands are happy and satisfied.
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** UPDATE (05/12/2022) -- Almost a year later, still excellent just like when I bought it, no wear, no issues. Everything is perfect.
Hope that helps :)