What’s the big difference of System Safety Monitor (SSM) and the Anti-Hook 2.5?

Because I was confused… that maybe these two just offers “an almost the same” protective functions. At present, I’m using SSM and I’m impressed, it’s really fast in detecting something on my pc and probably the fastest and the most responsive among other protective softwares like ProcessGuard, MS AntiSpyware, WinPatrol, Arovax Shield, SnoopFree and even SpywareGuard. If SSM and Anti-Hook were different, then, is it okay to use them both?

 

I've used them both and they seem to pick up exactly the same things plus ssm also checks for startup registry entried being added which antihook doesn't.

ssm had problems with remembering settings and also didn't play well with object bar, whereas antihook didn't have these problems but did slow my comp down quite a bit when in fingerprint mode.