Enterprise Mac vs. PC; at what cost?

Last week I looked at how businesses are taking a hard look at their current machines and wondering what to do next. More than just a Mac vs. PC post, many commented on how MS left the door open or that Jobs is a dope. Today we’ll look at actual cost comparisons for both hardware and software. Can a case be made to switch? Is Apple moving from a B2C model to a B2B one? I’ll avoid the question of should they.