Replacement keyboard recommendation

I’d like to replace the CTO wired A1243 Apple keyboard for an iMac 27" i7 Mid-2011, with a replacement keyboard that doesn’t have the issues that the current one has. Liquids have been spilled, but cleaning and drying still leaves broken keys, key replacement has been done for a number of keys, but additional key start giving issues. I’ve given up on this one, and I would like to continue with a keyboard without issues.

Can the current keyboards (e.g. Magic Keyboard with Numeric Keypad) be used with this model iMac (Bluetooth 2.1+EDR)? Are there still wired options?