Yeah! A poster! I thought I'd already lost my audience!
Alot of posters have said that Ontario is the cheapest - it's about a 45 min drive when there is not much traffic. Mon-Fri from 5am - 10am and from 4pm - 7pm are not the right times to be driving anywhere if you can help it. LAX is a total nightmare IMHO.
We always fly in to John Wayne International in Orange County. It is about 20 min from
Disneyland, and it's where our family always wants to pick us up. The traffic is usually not too bad from there.
There is apparently a Disneyland shuttle you can pay for if staying on-site, you can get it at either LAX or JW.
BTW, I read your TR, I was just so late to the party, I didn't comment - looks like you guys had a crazy time and you're planning to go again? Or are you thinking DL next time?