Just don't expect that you will by getting expensive tablet also gain talent with drawing.
If u are beginner use stuff for beginners: Genius and Wacom small tablets will suffice.
Large, quality tablets from Wacom, like Cintique - that is for professionals.
Advice, gather 50 euros and buy some tablet, see is it really good for you.
Better then to spend 1 K dollars on Cintique and use it as a surf board for your cat. :]