Watch: Does the Instant Pot Beat a Traditional Pressure Cooker?
If you don't have 5 minutes to watch the video I'll spoil the end result for you. The standard pressure cooker easily beats the Instant Pot in the beef stew test.
I've gotten more use out of my standard Kuhn Rikon pressure cooker than any other implement in my kitchen over the last ten years. I can't imagine my cooking life without it.