I would be very wary of this. The reason I say this is because of the software you are using to create illustrations needs to be what you want. I use photoshop for finished images that will be in print. Therefore, I need something that runs photoshop. Many of us will be using a tablet as an addition to our actual workstation (versus using it exclusively) which means that you might need to be able to go from the tablet to the main work station digitally. Many apps for drawing are ok for sketching, but when it comes down to layered files with custom built brushes, nothing is going to beat photoshop. (note: the app version of photoshop is nowhere near the power or capability of the desktop version.
With that criteria in mind, I went with a surface pro 3 and have loved it. I try not to use it to build images from scratch, but I do use it extensively for editing images while traveling and also working up images to a rough finish (which I will do the last stages on at my destop workstation and cintiq.)