Maxblast 5 and Seagate Disc Wizard are the same program. They work fine on my 7 x64 system.
I think you will find they are cut down versions of ATI 11.
The WD version appears to be a cut down of TIH 2009.
A lot of issues with TIH 2009 and 7 according to numerous posts.
A smaller, faster , free imaging app. is Macrium Reflect free.
Works perfectly on 7 x64.
Works with all HD brands.
Allows mounting and scheduling.
http://www.macrium.com/reflectfree.asp
Macrium is my preferred imaging app. by a large margin.
Paragon will soon be releasing Drive Backup 10 - word is it will include the ability to alter backup priority - making it faster if required. Something they never had before - that would make it a real contender for top spot with Macrium.