http://www.paragon-software.com/home/db-express/features.html
I use the full version and it is very reliable.
I couldn’t find a product comparison chart except for Personal & Pro version.
http://www.paragon-software.com/home/db-personal/comparison.html
Which features are not present in the free Express version?
Tech my friend, this should help. http://www.paragon-software.com/home/db-express/upgrade
Quite a few things missing like scheduling, differential backups,file and folder backup etc.
EDIT: The only product from Paragon that i’ve used is this one. http://www.paragon-software.com/home/total-defrag/
Fantastic program for doing a boot time defrag, run it from the boot cd and it does a really great job of defragging your drives. It’s slow as hell though.
;D
Thanks Darth 
Acronis Disk Director is doing its job of backing up whole partitions.