Following this thread with interest, as I usually book direct with car rental companies - for domestic, I usually book Thrifty as I found they had the best prices, staff are usually pretty good to deal with, never had any issues with returning the cars, being overcharged etc. I'll be in ACT and NSW for 2 weeks in May and renting a car out of Canberra Airport, so just keeping an eye on prices (which of course are absolutely ridiculous this far out, well over the $1000 mark for 2 weeks). Usually I will book a month or two out if I can find a good deal, then keep checking as prices tend to drop dramatically a week or two out and I just cancel and rebook, however at the moment, rentals with Thrifty throughout February are just stupidly expensive so have been checking out carrentals.com and the like and have been able to find much better prices for coming weeks for at least a couple of cars with Thrifty and even better prices for Enterprise and Alamo, so will certainly be looking at other options when it gets closer to my travel dates. Won't be going with Thrifty this time unless their prices come down considerably!