Some quick thoughts, input lag is good. Even tho it's double of the TCL (30 vs 15 Ms), I couldn't really notice a difference.
Picture is good. Local dimming is good and there are lots of options for configuring it to how you please. Motion quality MAY be a little better. Just from eyeballing Horizon. Or it could be me just getting used to 30fps after gaming on an144hz monitor for the last year. :P
Neutral: if you are disappointed by the HDR picture quality on Netflix, unfortunately it's still not.that great. I watched an episode of Dark that looked pretty good, but the Punisher was still pretty muddy. I guess there's only much you can do if the source isn't great.
Bad: Android TV. As a loyal Android fan (since the Nexus 6p and most recently, Moto Z Play) I thought I would be okay with it. I am not. It's slow, it's hard to tell if it's not registering your remote inputs from the lag or if its because of the IR. There's a nice selection of apps, but what use is it, if it's no fun to use. Even changing inputs or picture seconds has lag. Not good.
Also, it's a minor quibble, when I was trying to remove the screen to mount it to my vesa stand, one of.the screws would not budge. It ended up being stripped and took me like an hour to remove. Probably just my set, but quite an annoyance.
All in all, a good set, but is it worth the 400 premium over the TCL? In my opinion, no. It gets a little brighter, has slightly larger viewing angles, and motion MAY be just a pinch better, but Android TV sucks on this thing. I'm.considering switching back, but there aren't any Best Buy's with the p605 in stock, and I may drive my.gf crazy if she hears that I'm.exchanging AGAIN.