Hi!
I maintain an ssd database providing basic ssd specifications and links to technical reviews. Here is the link:
http://www.johnnylucky.org/data-storage/ssd-database.html
Scroll down to the SATA 3 6Gb/s section where you will find the Intel 540s. It is a new model so there are just two links to technical reviews. I will post links to additional technical reviews as soon as they are published.
You can also check for any other brands or models you might be interested in The technical reviews are divided into two groups - English Language reviews and reviews in many other languages. This is just a hobby so there is no advertising.
Glaring Mistake is spot on. Recently several different ssd companies released entry level models with the same controller and flash memory. You might want to check the technical reviews for the ADATA SP550 to get a better idea of what to expect.
If you are not in a hurry, you may want to consider delaying a purchase. Several companies announced new 1TB and 2TB ssd's. Some will be released during this year's 3rd quarter and some will be released during the 4th quarter. In addition, Samsung mentioned a 4TB ssd. Samsung will probably release it right after the big Flash Memory Summit in August. Finally, other sources suggest there will be a price reduction during the latter part of the year, especially for the new large capacity ssd's.