Did you know that Seagate/Maxtor has a freeware version of Acronis called "DiscWizard". A backup solution that works with only their drives. Western Digital also has a version they call "Acronis True Image WD Edition". I'm not sure if IOMEGA comes with a backup solution or has available one to download.
Here is a related thread for my post -
Backup your Hard Drive with Acronis
However, you may have already known. Good luck with your purchase.
In my opinion all the drives perform about the same as far as performance and reliability. Everyone gets a lemon from time to time which tarnishes the name of that particular brand for them. Thats the price one has to pay in changing versions with hardware as well as software.