If you want speed, I would get a OWC Mercury Extreme Pro; they are providing support, including eventual TRIM support AND a firmware update that will fix the sleep issue with SandForce driven systems, all for OS X. They and SandForce are together making the update. They may very well be the only company doing this. Speed wise, the Mercury Extreme Pro and the OCZ Vertex 2 are probably the fastest of all SSDs on the market currently (including the 25nm Crucial which has a much slower write speed).
Intel is going to decrease costs, but it appears their upcoming SSDs will be much slower than SandForce driven models. It will however still be eons faster than a normal hard drive.
I love my SSD and I will never use a standard hard drive again as the primary drive. It is completely silent, more durable, able to withstand more extreme elements, 20 million times faster, and more. The huge majority of those who buy a SSD is happy they did, despite the much higher costs of SSDs over HDDs. The first SSD we used was on the original MacBook Air which we got in late January of 2008. Three years later, it is as fast as the day it was bought and has had almost no capacity diminishment. It also was dropped down a flight of concrete stairs, over a ledge and then smashed on concrete a few feet below. And the 64GB drive in that (IIRC it is a Samsung) is a dinosaur compared to newer models with far higher speeds and better wear leveling. A good SSD is an investment that will bring you years of enjoyment.
The only think you may want is to look for a SSD that can do SATA3, as eventually it will replace today's SATA2. With that said, it should be a while until that happens so it isn't critical, but worth at least some consideration.
