Is the S599 available in Europe? That'd be a good prospect to check out.http://www.guru3d.com/article/adata-s599-100gb-ssd-review/7
All that review shows is a comparison of the controller chips that are used in each of those SSDs.
The ADATA is using the SandForce-1200 controller chip and the other two SSDs, the G.Skill and Corsair, are using the discontinued Indilinx Barefoot IDX110 controller. Everyone knows that the SandForce-1200 outperforms the Indilinx Barefoot.
The OCZ Agility 2 uses the SandForce-1200 controller chip. The Vertex 2 uses the SandForce-1222 controller chip.
Why even bother looking for an ADATA S599 when it would be comparable to the OCZ Agility 2?
The Vertex 2 is the right choice.