Travelling festivals seem to always be so shitty. Seems like one-off festivals are generally a lot better. Prog-Power ranges from nice to really great, and Maryland Deathfest is definitely great, wish I could go to that, and wish I hadn't been like really young for Prog Power III with two of my favorite progressive bands there.
But between the travelling festivals, if I had to pick, Gigantour. The only band on Sounds Of The Underground I love is Strapping Young Lad, and I saw them on their headlining tour, so no need to see them in whatever thirty minute slot they have there.
And the Gigantour lineup is:
Megadeth
Dream Theater
Nevermore
Fear Factory
Dillinger Escape Plan
Life Of Agony
Symphony X
Dry Kill Logic
Boba Flex Warriors