Is Yiynova MVP22U(V2)a good option over wacom cintiq?

Hi, I´m plannig buy a tablet, the Yiynova MVP22U(V2) has a lot of good coments on amazon and cost the same that the cintiq 13hd. I know that wacom are great, but 13 inches is too small to me, and I can´t pay a 22hd cintiq. I´m planing use this tablet to sculp with zbrush, texture with mudbox and for photo retouching with photoshop. Does anyone tested this tablet ?

Gabriel Herrera