I had some silly-great draws in my pool at the midnight prerelease. Just had a really aggressive RW deck that used heroic and bestow to keep up steam. Soldier of the Pantheon + Firedrinker Satyr + Anax and Cymede in my Theros packs helped a lot. Didn't fare so well this morning, but I did alright. Same colors, but without the cohesion - my best cards were just in those colors and there was no particular deck archetype I could achieve. Lost mostly due to a failure to keep momentum, or due to never getting it due to some absurd mana screw (mulligan a 7 land hand -> 4 lands, a combat trick, and an aura). Judging from people I talked to, low cohesion can happen a lot in this Sealed environment - but when your deck does come together properly, you tend to go pretty explosively.
Wound up winning 9 packs between the two events, so a free fat pack basically. Got Xenagos in one of them, and a Spirit of the Labyrinth. As I also got Eidolon of Countless Battles in both seeded boosters, I'm really satisfied - my card wish list is now 2 more of those Eidolons, 3 Spirit of the Labyrinths, and 4 Heroes of Iroas, and maybe a few commons or uncommons which I'm not sure I have 4 of yet. And 4 Temples of Plenty. Not exactly the worst place to be.