I do not have any experience with the PK, but I have had a Smokin-It #3 analog since 2014 and it is still going strong. I am actually a moderator on the Smokin-It site, but have not been active there for a couple of years. I still love my Smokin-It smoker and use it every year although I have also started using a pellet smoker for some things primarily for convenience. But, for pure smoking, I would always choose the Smokin-It over the pellet smoker.
I have not really had any issues with it, but the limited amount of issues that I have had have been quickly and easily addressed by the company. I am not sure if it is still the same way, but when you send an email or text for support/warranty, your response typically comes from the owner.
I would highly recommend any of the smokers from Smokin-It.