There's a youtube where Steven A rants on Marbury but while doing so says "he can play good defense when he wants to", so this counts as an [x]pert opinion yes?
Butler is a nice pick. I had him equal to Deng but only because I didn't view Butler's D as any kind of asset. I wish I could remember a Caron Butler Lakers moment but I seriously can't. Worst season ever (and consequent worst trade ever for Kwame, Gasol-trade withstanding ldo).