[soulnothing]

It depends on your taste, and where will this be located.

As an ancedote, I got the Das Keyboard brought it to work. I literally felt daggers in my back. Until I was kindly asked to remove the keyboard as it was disturbing the work environment. So keep in mind the sound it outputs. When I worked tech support, everyone had mechanical keyboards so sound wasn't an issue.

I remedied this by getting

http://matias.ca/quietpro/pc/

At home I used the Unicomp which is buckling spring instead of switch. This is by far my favorite keyboard I've used. https://www.pckeyboard.com/

My friend has a Kinesis, and constantly tells me it's helped his hands significantly. https://www.kinesis-ergo.com/shop/advantage2/

So how much resistance do you want, a solid click feel, and audible sound? Something older fashioned. Do you need backlight, ports, etc.