If you are buying one for your wife, the Instant Pot is the more popular product among Pinterest, online blogs, etc.
Which means she would probably feel more comfortable with the Instant Pot. There are tons of recipes and YouTube videos that are Instant Pot specific.
I bought an off brand pressure cooker on Black Friday for super cheap. I’ve liked it so much that I’m getting this Instant Pot - hopefully for Christmas:
https://www.amazon.com/dp/B01NBKTPTS?th=1&psc=1
NOTE: this particular model normally sells for $129 but it’s out of stock on Amazon so the price is too high from 3rd party sellers right now. I’m sure other sellers have it for its cheaper, $129 price.