Compression of standard backups is quite good and speed is pretty good too. I want to add additional comments here after the product has been in production use for 6 months - the total footprint of our backups has reduced drastically. It is far better than the native SQL compressed backup utility, and even though we are seeing approximately 1.4 : 1 de-duplication ratio (using compression at Level 3) we've saved so much space that we still have more than 33% free space on our backup appliances.

The compression, because it drastically reduces the disk space.

I do like the central management console where you can see a global status for all your backups and manage restores.