buy XP MCE and get upgrade coupon?

ok... i'm looking to build a new computer, and i feel a little pressed on time because vista is about to drop with the premium costing 240$ or so i hear.

but, if i buy MCE edition, i get vista premium for only 110$ plus 12$ s+H for vista itself and 5$ S+H for MCE from newegg.

to me, this sounds like i'll save about 100$ as long as i snag MCE with the coupon before it expires.

isnt... isnt this an awesome deal?

they dont offer an ultimate upgrade coupon- windows pro gets a business and home gets lame the lame ass basic vista which doesnt even have aero, so i feel vista premium really suits most peoples needs?

isnt this what i should be doing or am i missing something here?

- eventually everything will go vista, so it's inevitable that you'll have to make the jump at some point- this is the cheap way to do that, right?

thanks for all your advice guys, i can always trust you.