I have had a bit of time to use the recently purchased Lenovo tablet, this is running android os, so its not a laptop/tablet that runs windows, it was easy to use straight away, quite intuitive you could say,its light, compact, and has a decent battery life.
My main reason for buying this tablet was for the ability to use it as a Sketchbook, I was very close to getting a cintiq but opted for this instead because of its portability and versatility, I got my hands on Photoshop touch for under $10 from android market, I was disapointed with it straight away, the line quality is quite bad, seems like there's no anti-aliasing, I've looked around to find possibly more options but unfortunately could not find anything that made the lines cleaner, I'm surprised the op got such good results.
So I downloaded Sketchbook pro, thought I'd give it a try for under $5, t was a very good idea because the line quality is there, this is quite a good alternative to Photoshop touch, the only issues are; inability to crop, unable to set canvas size, could not find an eye dropper tool (please let me know if there is a way).
I've found myself using the tablet as a replacement to my laptop because its so simple and efficient to use, I'm not certain that its practical for serious digital painting projects but for sketching its quite alright. The programs I mentioned above will need some further upgrades, what PS touch has sketch up lacks and vice-versa. I hope my short review was helpful.