I recently bought an SSD, the Corsair F60 and did some benchmarks using CrystalDiskMark (get the .zip version, the .exe has adware).
I don't see much of a real world difference, possibly because I have 6GBs of RAM and maybe Windows 7 caches most data in RAM if it can do so. Boot ups are faster, but I boot maybe once in months. Application installs are faster and possibly they start up faster, but like I said, I haven't been blown away by the SSD. But the benchmarks do tell otherwise. The rows are Sequential I/O, Random I/O with 512KB chunks, Random I/O with 4KB chunks and Random I/O 4KB chunks with a queue depth (separate I/O requests) of 32: