Case 1 is same as your current one, i would go for the case 2 because i personally don't like the full tower cases.
the square cases are pretty compact in terms of looks.
Case 1 links to the same case as your current case. It completely depends what you're looking for in case, as it's almost completely aesthetic. At that price, I personally would get the 750D, or the Fractal Design Define R4.