Yes, very happy with it. Can't fault the picture, but think the Panasonic has a slight edge - warmer perhaps? 10inch difference, so difficult to properly judge. You have 3 months with Costco to request a refund if you're not happy - they happily collect free of charge
The 2018 models are pretty good. The only thing I don't like is that its a VA panel rather than IPS (personal preference). The Smart features are meant to be really good too.
Is the Hisense decent?
I had the 600B, which I returned for the recent hukd 65inch Hisense at Richersounds. Very basic features and would not play mkv and only a handful of mp4 files. Picture was good out of the box, though