Just about EVERYTHING! My company switched from Greater Giving to ReadySetAuction this year for our Fall Festival and Silent Auction and what a difference did it make. RSA saved me so much time this year, all I had to do was put the correct information in and the software did everything else for me (no more days of having to type the same information 3 different times in 3 different places). This software is EXTREMELY user friendly, their customer service is top notch and the price is right. Another benefit for me was it's compatible with DonorPerfect! I would highly recommend this to anyone!
I really have no BIG complaints about this software. My only hiccup was that you can't have 2 packages with the same name (for instance, we do a silent auction of gift certificates and if you have 2 gift certificates for the same place and same amount but you want to separate them, you have to change the name of the second one slightly, even if that means just putting an extra space).
Saved us time and money!