Hi, I use the free online One Care scan sometimes.
I have a few of the tools you mentioned and will run all of the tools.
This is reported in the current Avast boot scan in my pc.
File C:\WINDOWS\SoftwareDistribution\Download\d9xxxxx...xxxxxx1a4\BITB7.tmp\MAINSP3.msp ERROR 42127 {CAB archive is corrupted}
...and in the first Avast scan this was found:
File D:\FolderDocuments\Webcam\Shareware\wp402e.exe\%MAINDIR%\sx53inst.exe is infected by Win32: Trojan-gen{other}
...this was removed by that scan.