So, just go with the OCZ vertex instead of the X25-M. Not as fast as the X25-M but it's faster then the stock Samsung SSD and is offered in the same capacity. Cost less too, although only by a few dollars.
Another vote for the Vertex. Outperforms the stock Samsung and is faster in every day consumer tasks than the Intel, even at nearly half the price per GB.
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.