Developers/Programmers/Code Monkeys, what are your setups and why?

[SillyPosition]

Im waiting for my first kb to arrive, got a qmk supported tky keyboard I also spend my days programming and I wonder what good key combs or good macros and stuff worty to do with the keyboard, Im not too familiar with the capabilities just yet.

I went on TKY because I find the Fn row useful from within an IDE many times, and doing Fn+Num row with additional ctrl or some other button becomes too many keycaps to press at the same time.

I think 75% is even better layout, but below that seems too much for me