In the comparison with the Vertex 3 on pre-production firmware again there is no drive which wins every test. The Vertex 3 generally excelled in our synthetic tests, though the m4 beat it in 4k writes. Large transfers and HD editing were strong on the OCZ model then the m4 was the winner in game verify/repair and Office installation.
So where does that leave consumers when deciding which to buy? Based on the most recent firmware we would have to say that a large part of that decision could come down to pricing. We are still waiting on the final pricing from Crucial however if they can come in a little below the Intel and OCZ models the m4 becomes a very desirable product. At the same price level the Crucial m4 offers roughly 15GB more useable space than OCZ, 6GB more than Intel and highlights such as good performance with small file copy operations.
An evolution of an architecture which has proven its high performance, reliability and compatibility the m4 stretches Crucial's performance lead over SATA 2 drives and ensures they are competitive with the latest SATA 3 models.