Mechanical mouse and keyboard 150 USD suggestions?

So I am looking to replace my incredibly old Bluetooth mouse and keyboard. I find that their responsiveness has dwindled with time and its about time I get a new one. I would like to spend 150 USD for both. but I can manage 175 USD if it's really worth it.

EDIT: yes, I did watch the tek hardware videos on keyboards. But I dont need all of that fancy software with light up LEDS and stuff. I just want something that will last a long time and that works very well.