We are looking @ Windstream to provide MPLS service between 2 sites. This link is critical to our business. What did your research/experience tell you?
I recently gathered quotes for MPLS through several major carriers. Windstream came back substantially lower but I have heard some negative things about service quality, reliability, and support. Any input would be appreciated.

Chowhound
Comic Vine
GameFAQs
GameSpot
Giant Bomb
TechRepublic