1 or 50 spreadsheets per file

[Dave Feustel <dfeustel verizon net>]

I have 50 vending machines for which I want  to rlog cash income.
Would I be better off with 1 file per machine or with all 50 spreadsheets 
in a single file? Or does it make no difference with gnumeric in terms of
file loading/saving speed?

Thanks