My wife bought a mac-daddy InstaPot and the few times we used it, the food (meat) came out rubbery. We thought it would make cooking quicker, but in reality, it doesn't. Maybe I am just an old school idiot, but I cook a lot and have yet to have any true success using them. My friends rave about them, but when you eat what they brag about, I wonder if they just don't have high standards for food.
I think it comes down to personal preference and technique. I'm willing to bet if you get one and dedicate your time to using it and learning on it, it will probably serve its purpose. But for me, I have a $180 ornament sitting on top of my fridge collecting dust. Haven't used it in years. I see way too many kitchen gadgets that just take up counterspace and add one more thing to clean when cooking. If you have room to store one, go for it. You may have better luck than I did.