In our opinion, the Sapphire/Steel starter deck is the better of the two for a few reasons
Eldrazi Titans The original Eldrazi Titan cardsUlamog, the Infinite Gyre, Kozilek, Butcher of Truth, and Emrakul, the Aeons Tornall shuffle your graveyard into your library when they hit it
The included 8 booster packs will expand your collection and give you more options for your decks
Not the biggest trade, but if he's taken a few folks out with him, he's got you closer to or further into the lead, doing more than some other cards would in just a couple of rounds
Run three or four of these Mickey Mouse so you can start playing some of those stronger characters more quickly
Cards like Teferis Moat, Raking Canopy, Elephant Grass, Ghostly Prison, Arcane Denial, Mindclaw Shaman, Syphon Mind, Relic of Progenitus, and Nevermore can play different roles in stopping a certain type of plan or play from coming to fruition