Best is a very subjective word. You need to at least give a price range, and if you'd prefer Windows or Mac. And if you are talking about the current version of Photoshop?
Best laptops are also very expensive. What is your budget what kind of performance do you want. How portable lightweight or large heavy laptop.
The Surface Pro 4 is not announced yet. It is rumored that there will be two sizes. 12" and 14" Both LCD will have 2160x144-0 pixels like the Surface pro 3. The 14" display would have a PPI resolution around 140 PPI which should work well with CS6. I hear good things about Windows 10 and Surface Pro 4 is again predicted to have Windows 10 installed on it..
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I think with most laptops you're going to lose a lot of high-end functionality but if you want something relatively cheap and powerful, as much as I don't like to say it, Apple Laptops do a pretty good job of Running Photoshop and will only run you in the 3000 $ range.
The surface Pro 3 works quite well they cost from $800 to $2000. The i5 256 ssd model with 8GB ram should work well for all but heavy duty Photoshop use.
Photoshop UI is not really touch friendly I would use a mouse on PC with a touch screen . I use a mouse and a touchkey application on my Surface Pro 3. I do not use the 2x UI option it can be use if you use shift+tab to hide the palettes most of the time. The Surface is very portable.... I'm sure macbooks will also be useable.