2. Sorry, geany just did well enough for 15 years, won't spend a month on learning any quirky editors :)

Correctness over performance.

Read the fantastic manual :)

Sidenote on this, if you want to take a contract-first approach, having an openapi yaml first before any implementation, you can easily write API tests verifying that your implementation matches the contract

+1 for 1. and 3. No clue whats wrong with HP though. Mac: nothing justifies its price for me, sorry...