If any of these are paid for versions... I would keep them until they expire.
This is my personal opinion, other's may feel differently... Keep everything except:
Spybot Search & Destroy-------------- Unless you are using it's Immunize feature that will update your HOSTS file... it's not that effective and can be removed
Hijack This-----------------------------Remove... not needed
Sophos Anti Rootkit---------------------I would remove, MBAM has some rootkit detection. Can always be downloaded if needed.
Spyware Blaster------------------------Can be helpful as it places known bad sites into your "Restricted Zone", so they can't be accessed. Do not use if using IE8 and have "SmartScreen Filter" active. Can cause browser to crawl.
Hopes this helps. Unless there are more malware concerns or questions, I'll request this topic be closed. Let me know you've sen this post.
Stay Safe out there.
Wingman