No other scans or you really are becoming a slave to your system rather than it serving you.
I wouldn't do an HJT scan unless there was a specific problem and need to check if something might be running, unlikely given the number of scanners you have.
Personally I would get rid of spybot, if MBAM and SAS don't find it I doubt spybot would find anything.
Secunia is a once in a blue moon scan for me as I keep my system up to date, usually monitoring the << Updates >> topic in the forum helps.