Couple of Qantas questions

[Ben W]

Flying Qantas for the first time in about 9 years LAX-MEL in about a couple of months. Flight leaves out of TB terminal at LAX. What's it like getting through security there? We arrive in LA on AA and need to go to TB for the MEL flight. Connection is about 2 hours- is that enough?

And on the A380, what's the best area to sit in economy? The seat map looks pretty open at the moment. I was going to reserve seats up front but didn't know if there were any tips that may be better?

Thanks for any info you can give.

Cheers,

Ben