don't know alot about js frameworks,
three things might be interesting (talking out of my narrow mind .. )
- speed (afaik mootools an jquery are almost equal here ?)
which is the most important thing to _me_ as i hate nothing more
than lagging website caused by funny js stuff.
- nice to devel.. well that's your part =)
- available functions (well, that's nearly same as above), but one might take
into account if there's a need for every possible functionality.
voting for jquery to keep the race up and running =)
ahm yahh.. sfsg.