I have several clients running SSD's. Some alone, some in RAID configurations.
Yes, they do yield significant performance increases over SATA/SAS drives, however you need to be brand conscious when selecting them, and also understand the specific resource usage they will be subjected to, to accurately forecast a general % increase in overall site performance.
If you have any questions about a specific project or you've been looking at upgrading to a SSD equipped server, I'll be happy to provide you with a free in-depth consultation to determine if you really need SSD's and if so, what configuration would be most beneficial for you.
