We really like PCMark 7's Secondary Storage benchmark module for its pseudo real-world application measurement approach to testing. PCMark 7 offers a trace-based measurement of system response times under various scripted workloads of traditional client / desktop system operation. From simple application start-up performance, to data streaming from a drive in a game engine, and video editing with Windows Movie Maker, we feel more comfortable that these tests reasonably illustrate the performance profile of SSDs in an end-user / consumer PC usage model, more so than a purely synthetic transfer test.
Though the deltas separating the higher capacity drives here are relatively small, technically all of the ADATA Premiere Pro SP920 series drives trailed the OCZ and Intel offerings. The lower write performance of the lower capacity drives, pushes them towards the bottom, though the 1TB faltered a bit as well.
If you look at the individual tests, the ADATA drives did well in the starting applications and video editing tests, but trailed in some of the others.