What keyboard you recommend for coding?

Most keyboard reviews are about gaming. Can any of you recommend a good keyboard for coding/programming?

Here's some criteria for selecting the keyboard:

• Comfortable keys, easy to click and write coding quickly
• Must be a bluetooth keyboard
• Prefer using replaceable batteries instead of charging port
• Full keyboard keys including function keys, arrow keys and numpad
• Size can be compact or full-sized
• Doesn't matter if back-lit or not
• Doesn't matter if loud or quiet clicks
• Budget around USD 50