New Keyboard

I don't know if it is useful but I know Happy Hacking professional keyboards. https://happyhackingkb.com/

I don't know if there are some thing better or not.

Xah lee, an emacs user review a lot of keyboards. http://xahlee.info/kbd/keyboard_blog.html

@jxself
I have researched and watched lots of videos about the Model M keyboard and Unicomp  Model M version in last summer, but I have gave up buying them here is my reasons 
 
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    - Unicomp Model M -
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1 / The quality is not the same as IBM's original model M for example the plastic, keycaps and PCB, however, the sound difference is due to age.
2 / I don't like the blue caps on and lock button at the top.
3 / Unicomp as a company based in USA Kentucky, and I live in eastern Europe It will be very hard to send to guarantee if something happens to the keyboard, and I may not be able to fix it by myself.
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    - IBM Model M-
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1 / IBM model M was made decade ago, so it is hard to find a good condition model M without breaking the bank.
2   PS/2 is not a common interface anymore so a dongle must be used;in addition, there will be an increase in lag, but it is acceptable if you don`t play games
3 / Many Model M that I saw need renovation, like painting the case, fixing the light on the caps lock, and on maybe bolt mode.
4 / IBM model M layout is a bit different than the 104 keyboard layout. It lacks super keys frequently called super-keys.
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    The down side that both apply to the Model M and Unicomp                                                                                                                                                                                                  
$   I want to add these keyboard sound like a engine if you have a fast wpm like me,90 wpm.                                                                                                                                 
$   I really love and admire the buckling spring;however, it is not a good idea to buy keyboard that fullfuill my all free desk space and unlike the noramal keyboard I cannot move the keyboard as easly as logitech MK  
    keyboards.
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