256-bit Camellia vs 256-bit AES - Which is better?

[Chip Panarchy <forumanarchy@gmail.com>]

Hi

Recently found a website, (using Firefox 3, love there blue favicon
idea, always click it), that was using Camelia 256-bit, instead of
what I usually see (RC4 128 bit or AES 256-bit).

Hadn't seen that cipher before...

Which 256-bit encryption is the best? Camellia or AES?

Also, what attacks can be run against each of them? (or are they
'uncrackable', eg would take 2yrs to crack one password)

Can rainbow tables be generated for both ciphers? If so, how much
hard-drive space would I need to store them? And what program should I
use to generate these rainbow tables? (eg Winrtgen, etc.)

Are there open-source implementations of both ciphers?

Please reply, as I know very little about the 'security' of these two ciphers.

Thanks in advance,

Panarchy

PS: If I'm using the word cipher incorrectly, please tell me what word
I should rather be using. Thanks!