Variable Buy-In tourney: what would you chose?

[Fraubump]

(I realize this isn't exactly right forum, but it's home and you guys like to talk about anything interesting)

Let's say you had a tourney with this buy-in structure:

$10 gets 1000 chips
$20 gets 2000 chips
etc. up to a max of $100 gets you 10,000 chips.
No rebuys. You don't get to see how many chips other people are buying before you buy yours.

How much do you buy in for and why?