though i havent played in a while i run any of 12 decks consistantly. depending on my mood and who im facing (person) i pick a deck that can either beat them fast or slow. but sometimes i make careless mistakes and end up losing.
Exodias ROFL. (a deck with the exodia set plus necros and exodius the ultimate forbidden lord, and a bunch of cards to annoy the crap out of the enemy while i gather my exodia force together.)
001010010100101 (or binary for short obviously its a machine deck)
dragons wrath (again obvious)
zombie apocalypse
a deck built around the two legal to play egyptian gods (ra and obalisk)
a pyromancy deck
a deck for Uria the searing flame
a deck for Raviel lord of Phantasms
a deck for Haman lord of striking thunder
a E-hero deck
a regular warrior deck
and finally a spellcaster deck.