There's also the HP Elite x2- that has a 3:2 screen (2736 x 1824). Very pricey for what you get, though.
Speaking as someone who owns a Windows 2-in-1, and has done for several years... are you sure that this is what you want? I've got a Dell Venue 11 7130- I thought that I would be getting a great combo device that would remove the need for both an Android tablet and a laptop. What I've found however is that it has almost no good tablet apps- and even the ones that exist lag far behind their Android versions. The Netflix Windows 10 app is a buggy mess that looks terrible- you're genuinely better off using the website. The performance is just not that good, because the CPU is constantly getting throttled down- Dell set a 7W power limit on this thing, which means that as soon as you fire up anything that uses the GPU the whole thing throttles down to crazy low clock speeds, and performance goes to ***t. It's big and bulky, meaning it's not that comfortable to hold for web browsing, and it doesn't function that well as a laptop due to the fact that it's top heavy and tends to fall over- it's a nightmare to use on the sofa in laptop mode.
A lot of these problems are probably due to the fact that it's quite an early 2-in-1- it has a Haswell CPU which is pretty power hungry, meaning that it needs an enormous, bulky battery, and a noisy and bulky active cooling system. (You can tell whenever Windows starts installing updates in the background, because the fan starts whining away like crazy.) Not to mention that when working hard, it gets warm enough to be uncomfortable to use. Maybe the newer, thinner devices with more efficient SoCs wouldn't be nearly as bad. But to be frank, I wouldn't buy a device like this again.