I will freely admit that the only reason I haven't bought the box set is the lack of logo dice. I remember once a long time ago the TORG box set came with a specialty d20, after mine was lost (stolen) I went out and bought a second copy of the box set just to replace my lost die.
I definitely would buy logo dice if they were more commonly available, even in a box set, as until this last year I had been unable to attend conventions, and pharmacy school will be keeping me from all but a couple of them now.