Anyone here into graphic design or digital illustration? I've spent weeks searching the internet for a high-end Tablet PC to no avail. I was initially going to invest in just a pen-to-display monitor like the Wacom Cintiq or its alternatives, but I figured I'd invest in a more portable Tablet PC for that price. So with that in mind, I'm looking for one with the following specs: • At least 64GB of hard drive space. If I can expand that, it'd be super. • At least 2GB-4GB of RAM - also preferably expandable. • At least 4 hours of battery life. A removable one is nice. • Able to run Windows 7 (I can settle for Windows 8 but half my programs wont work yet). • Preferably 11 inch display and above. • Pen Stylus with Wacom Digitizer and at least 1024 levels of pressure sensitivity (I can settle for 255 levels if the other points are met). Multi-Touch display would be nice but the stylus is the priority, and by extension the most important aspect. I looked into the Asus EP121, Asus Transformer Infinity and the Motion Computing E1700, but I'd really like to consider all my alternatives first. I've also looked into the Samsung Slate 7 and Microsoft Surface Pro. I'd prefer a full OS over android, but if it can run decent sketching programs I'll take it. I prefer not to spend more than $1,500 USD, but if please share any links regardless. Thanks in advanced.