All i use are mini’s. they actually are my cell phone too.
I have a 5, and completely fine for any iOS apps. I can’t get it to max out no matter how many audio apps im running.
That being said, ordered a new mini. Why? Because USB-C. If it didn’t have that, i wouldn’t have bothered.
It cracks me up that USB-c is fine for an iPad mini, their red beaded step child of the product line, but iPhone 13 with is super mega camera shooting in ProRes still gets lightning.