I would recommend the Crucial M4 128GB. $124.99http://www.newegg.com/Product/Product.aspx?Item=N82E16820148442
It is fast, and reliable. I'm currently using it in my computer now - no BSODS, no problems.
Basically - any SSD will open up your programs much faster.
You do realize you will have to re-install everything if you want to run all your programs/OS on your SSD right?
Edit: To mount your SSD in your case your case will either need 2.5" holder's or you might need a 2.5"->3.5" bracket for your SSD.