I have this model for homebrewing:

http://www.amazon.com/Avantco-IC3500-Countertop-Induction-Cooker/dp/B00514BTJ6

It is great and I've never had a problem with it, but I've not used it to pressure cook. In temperature mode, it has 10 degree increments, which my tests heats my covered stock pot 2/3 filled with water to 10 degrees less than what it's set for.