We're gonna be frank with you, unless you have serious cash or data issues or your company is footing the bill for your new SSD you might want to look elsewhere. That said RunCore has a new line of SSD's called the ProCore IV which are only 2.5 inches.
So you have a netbook and need more memory. Well you might be interested in RunCore's new line of SSD which are shipping as we speak. The 1.8-inch wonders come in 16/32/64/128GB flavors and cost $69.99, $119.99, $199.99 and $389.99 respectively.