If you are planning to book the Penske truck, go to this site www.movingorbit.com then click on Penske link. You will get another 10% discount on top of penske's 10% .... Approx. 20% discount total and more if you have AAA membership.
Someone else posted on that other messageboard that AAA membership gives you a 10% discount with Penske. I don't know whether you could get that on top of everything else, and I haven't verified that booking with Penske through MovingOrbit will give you a 10% discount, but I think it's worth investigating.
To the reader in Viet Nam: THANK YOU for spreading the word about this Penske discount, Broadway Express, ABF, and MovingScam. It was amazing to me to read my own words from this website in your posts from Viet Nam. Such is the power of the Internet.
WARNING! Don't use the MovingOrbit website for ANYTHING other than this. They are a moving broker that sent many would-be scammers my way a year ago.