I came to pretty much the same conclusion a few years ago, Edgecast was my favourite, until Verizon bought them. I dont know if there are any changes, but I have yet to see big acquisition that dont mess up the company.

Limelight was my favourite before I discovered Edgecast, the only problem is Limelight no longer does business with small companies and no more reseller / PAYG model. Which means basically most of us cant use them. But I didn't know Goldman Sachs bought them? And destroy them?