Card Edition Swap

Hi, looking to straighten out one of my decks by making the card editions match.  Looking to trade for the following cards, and can trade back thd other edition plus some value. Thanks!
3 Blinkmoth Nexus (have Darksteel, want MM)
2 Glimmervoid (have Mirrodin, want MM)
1 Steel Overseer (have Dual Deck, want M11)