I do not know how much oomph iTunes needs. You can get a tablet with Atom or with one of i3-7 processors. Difference is in price, performance, and battery life. If you go for the better processor, make sure it's 4th gen, you get a better battery life out of it. You need an SD slot for your iTunes library, because an internal disk space is usually limited. I am smitten with Lenovo's ThinkPad 8'', should be 4G, too, for ~$400, but it's not available in Europe yet. There's quite a big selection of available Windows tablets, personally I would go for something with full HD screen, internal disk at least 64GB or better yet 128GB. I only made an experience with an original Surface Pro. It's quite chunky and a battery life is not very good. Surface Pro 2 should be better in that respect.