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Apple uses high-end Samsung SSD's for the Macbook Pro's, read and write speeds around 200 MB/s. It is equivalent to this part number MMDOE56G5MXP-0VB
 
I read somewhere on the forum that Apple's SSDs aren't very fast. Don't quote me on that though.

However, I personally feel if you're going to be paying $500 for SSD it better be damn fast. In that case, get an Intel X-25 and pop it in yourself.
 
i should have added to vertex in my earlier post as well. In fact, if I was buying I would consider the vertex due to it having more space and with the prices relatively similar in range.
 
Luck of the draw - could be a samsung, toshiba, or hitachi. I went with a Vertex and turned my factory drive into a firewire portable for time machine.
 
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