I once talked about this topic with a guy form the Apple store, and he told me that the performance improvement was not worth the price. He said only people with really HDD intensive operations (like rendering HD video) would benefit from this technology.
Now, I do work rather frequently with video processing, but I do it using an external FireWire 800 hard drive, which should be pretty fast and takes the load off the main HDD of the computer, so I was suspicious about the advantages of SDD.
Now you confirm this to me so, no SDD for me (at least not now)
Thanks for your feedback!