I can add recent experience of General Altimax UHP and Nexen N6000 in 235/45/17.
The Generals were pretty good, I reckon. Lowish noise level and pretty good grip. Fine in the wet. No significant tramlining until well worn but then did get a little choppy. Lasted 18K at a guess and still just about hanging on. I'd rate them about KU31 level overall. Now £90 a corner, though. I'll decide if they're worth that when the Runways have done a few more miles.
N6000s were on the back pretty much their whole life. Did try them on the front for a while, IIRC. Probably swapped them back to the rear where they started out due to tramlining. Pretty unremarkable, IMHO. Average in every respect. The back end of my car is normally pretty well planted and needs provocation to let go. It got a little twitch at times with these on. That said, they weren't so awful I couldn't live with them. Lasted 15K, but on the rear pretty much their whole life. For the grip level, that's faster wear than I would expect.