Anyone planning to buy PS3 bundled with MGS4?

[Coca-Cola]

this is making me think a little. I thought 40G and 80G were pretty much the same except for the HDD.

The employee, who love PS3, told me they were the same and that 80G still didn't play many of the PS2 games.
I'm guessing now that he doesn't know what he's talking about.