Got my instant pot in November and really really like it. I am not familiar with the Power pressure cooker. So what I say is: If you don't know anything about electric pressure cooking (like me), and the price is about the same, I would go for an Instant Pot. As you say you see lots of information and recipes for the instant pot and that may be helpful in learning to use it. The Instant Pot Facebook Community page has well over 1 Million members. That is a lot of pots out there and as far as I can tell, I have not heard of any problems with it other than user issues. I have learned that it is different from the stove top cookers, timing and capabilities are different, and my biggest issue is getting the timing right. But no major fails so far.
Whichever you decide, electric pressure cooking is a real time saver.