All I know is that Intel is more than 3x as good as the OCZ on 4K random reads/writes, and also has better read speed, although inferior write speed. Also, Intel has released firmware (that has been tested) to address the performance degradation issue. The Vertex is as yet insufficiently tested, and in what testing I've seen, degrades much more. I would put my money with Intel (and I do).
Also, I'd say that if you're pretty well-off, then the time is now.
The Intel drive has better random reads/writes, but the Vertex has better sequential reads/writes. Also, the Vertex now supports trim so it's performance probably degrades even less than the Intel drive.
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