OZWIN said:
It really depends on the type of cake and the type of pie involved.
Homemade sweet Black Raspberry Pie wins over all other foods. However, that particular breed of pie is very hard to come by - I have never had a non home-made version even come close. And the effort to find and pick enough berries to make a pie out of is hours and hours of how, bug-infested work.
On the other hand, the (almost) flour-less chocolate cake at the grocery store is multi-orgasmic chocolate bliss for 3 dollars per slice.
Which do I prefer? The pie.
Which can I purchase in the next ten minutes for a mere three dollars? The cake.
Which wins? I don't know... and now I'm hungry. Damn you, OP! Damn you!