That would be a controlled comparison test of YOUR workload.
In general, I would discount most of the synthetic benchmarks. They use apps that drive the SSD's to their maximum rates at very high queue rates.
That might be appropriate for a server.
We usually do things one or two at a time, so the response time for individual reads and writes are more relevant. This number is not usually reported, and for the most part, all modern SSD's perform about the same in normal desktop work.
That is about 50x faster than a hard drive in random I/O which is what the os mostly does, and 2-3 times faster in sequential.
Perhaps one I might pick out would be the anandtech ssd bench selecting light workload disk busy time.
Here is the current report. Only the samsung 840 pro is as good as 10% faster.
http://www.anandtech.com/bench/SSD/269