Hey gang, what in your opinion is the best diagnostic app for OS X? REMEMBER, I'm referring to OS X compatibility. Like, I know people seemed to prefer DiskWarrior in OS 9. Is this also the case with OS X?? Which one is DANGEROUS or untrsutworthy (heard bad things about Norton for OS X). Which one covers all (or most of) the bases? TechTool Pro was fairly comprehensive in OS 9.