Regarding Pagan Fest USA...
For what it's worth, I thought Eluveitie kicked major ass. Tyr was okay, but somehow didn't gel with me or the audience. The crowd appeared listless during Tyr's set and more than one person commented they didn't like the band. Turisas was a huge surprise and a lot of fun.
Regarding Gigantour...
I thought High on Fire and Job For a Cowboy blew chunks. Children of Bodom was okay, although Alexi wasn't really into connecting with the audience. He was more into spitting, shredding, and cursing the cold weather and the venue, both of which he said sucked.
In Flames was totally killer. I posted a mini review of their Gigantour set on the In Flames Forum. I gained a lot of respect for In Flames that night. The weather at DTE in Detroit was so cold that we could see Anders' breath. (It was about 42 degrees, rainy, windy and bone-chilling damp.) He told the audience, "I'm freezing my ass off. And I'm from Sweden."
Despite a fan jumping the barrier and grabbing Anders during "Move Through Me," and in spite of the really lousy weather, In Flames put on a great show. Very professional. Very open and friendly with the audience. Megadeth, on the other hand, was incredibly lousy. The vocals were buried. We couldn't hear a thing Dave sang. If we hadn't been sitting in the fourth row, we wouldn't have known he even was singing (and, for the record, he appeared to be NOT singing most of the time...barely moving his lips). I don't now if he had laryngitis or was trying to pull a Britney and lip-sync the show.
Between the two gigs we saw (Pagan Fest USA and Gigantour), I'd say our favorite, hands down, was Pagan Fest USA. The venue (The Pearl Room) was intimate, and the bands were exciting, connecting in a big way with the audience.