Planning on getting 1

Hello everyone! I'm a proud budgie owner and I wanted to open my home a bit more to a larger bird and after a little research I feel like a cockatiel is perfect. What's been your experience owning one (I intend on getting a male but happy to hear about both), what did you wish you know? Cage set ups? Best feed? Personalities, colours etc I want to know everything! Google is great but I prefer to hear it from owners themselves :)