I really like my Surface Pro and use it for some illustration work from time to time. It’s too underpowered for 3D work, but totally fine for Photoshop. They just released a smaller 10 inch “Go” version if you’re looking for something ultra portable and not bank breaking.
I also hear that full Photoshop will be coming to the iPad Pro in the future, but how long that will actually take is anyone’s guess.