Well once you double sleeve them, including basics, you don't really have to do them anymore. It's a hard start. But absolutely worth it. Look beyond the Cube's shell life. One day you might sell them away, downsize, unfoil, upsize, etc...
Retaining whatever value is paramount, therefore the condition of cards should be maintained.
I can't wait until I can start double sleeving. I'm just now getting my cube pieces all together, and breaking down the plethora of EDH decks I have for staples. Try to get around 15 active EDH decks and a glorious cube.
Mang, doubling sleeving my 360 Cube plus basics solo was like a 14 hour soul searching journey. That was taking the card out of the sleeve, putting on the inner sleeve, the outer sleeve and back in the box. All in all, totally worth it. My Cube originally wasn't double sleeved and a glass of red wine got knocked over onto a pretty decent board state, the only victim was a Woodfall (Winefall) Primus however it was scary enough for me to want that extra protection. Also, I have seen people with some pretty questionable shuffling techniques and watching them I am like "please don't have drafted my Gofy, Bob, Clique, JTMS, Snap, etc..."
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Retaining whatever value is paramount, therefore the condition of cards should be maintained.
UR Melek, Izzet ParagonUR, B Shirei, Shizo's CaretakerB, R Jaya Ballard, Task MageR,RW Tajic, Blade of the LegionRW, UB Lazav, Dimir MastermindUB, UB Circu, Dimir LobotomistUB, RWU Zedruu the GreatheartedRWU, GUBThe MimeoplasmGUB, UGExperiment Kraj UG, WDarien, King of KjeldorW, BMarrow-GnawerB, WBGKarador, Ghost ChieftainWBG, UTeferi, Temporal ArchmageU, GWUDerevi, Empyrial TacticianGWU, RDaretti, Scrap SavantR, UTalrand, Sky SummonerU, GEzuri, Renegade LeaderG, WUBRGReaper KingWUBRG, RGXenagos, God of RevelsRG, CKozilek, Butcher of TruthC, WUBRGGeneral TazriWUBRG, GTitania, Protector of ArgothG
On spoiled card wishlisting and 'should-have-had'-isms:
I'm another that does not replace inner sleeves unless absolutely necessary.
thats my cube
Modern: Jund
UR Melek, Izzet ParagonUR, B Shirei, Shizo's CaretakerB, R Jaya Ballard, Task MageR,RW Tajic, Blade of the LegionRW, UB Lazav, Dimir MastermindUB, UB Circu, Dimir LobotomistUB, RWU Zedruu the GreatheartedRWU, GUBThe MimeoplasmGUB, UGExperiment Kraj UG, WDarien, King of KjeldorW, BMarrow-GnawerB, WBGKarador, Ghost ChieftainWBG, UTeferi, Temporal ArchmageU, GWUDerevi, Empyrial TacticianGWU, RDaretti, Scrap SavantR, UTalrand, Sky SummonerU, GEzuri, Renegade LeaderG, WUBRGReaper KingWUBRG, RGXenagos, God of RevelsRG, CKozilek, Butcher of TruthC, WUBRGGeneral TazriWUBRG, GTitania, Protector of ArgothG