Best Embedded Linux Development Kits?

curious-embed asks: "I'm currently involved in a project which is moving towards using Linux in an embedded environment. However, I am having a lot of trouble finding a reasonably priced dev kit to tinker with and move towards something more production ready. Linuxdevices.com has a guide The Linux-friendly Embedded SBCs Quick Reference Guide but most of the listed manufacturers won't talk to you unless you are buying 100+ kits. I'm specifically looking for something ~$200 with USB/Audio/Video that is Linux friendly. Ideas anyone?"