OK, this thread has been really great, in fact it's the most recent discussion I can find on the topic of ssd's. I am looking to purchase either the Intel X25-M 160GB or the OCZ Vertex 250 Mac Edition.
Based on this article, I will not consider other SSD's
http://www.laptopmag.com/review/storage/high-speed-ssd-shootout.aspx?page=9
Here is what I have gleamded from all my reading:
1. The Intel X25-M is the standard by which all SSD's are measured
2. The OCZ Vertex line is pretty close performance wise with the X25-M
3. X25-M optimized for small random read/write, OCZ V optimized for sequenction read/write
4. Trim IS A VERY IMPORTANT solution in the SSD space. Basically, over time as your drive fragments, write operations will take literally twice as long as SSD space must be erased before it can be written. TRIM will enable handshaking between the OS and the drive firmware to perform "lazy cleanups" in a STANDARD fashion.
5. As of this writing, Trim is supported in the X25-M intel Gen 2 SSD firmware. It is NOT supported in Snow Leopard 10.6.2
6. You can "clean up" your SSD every 6 months or so by backing it up, and running a cleaning utility such as Disk Tester.
My conclusion, go with the venerable X25-M and use a manual cleanup process until such time as Mac OS supports Trim.