As for SATAN/SAINT, I haven't used those in ages. Wouldn't recommend it due to the fact that I'm not sure how up-to-date and thorough it would prove to be for you.
Well, SATAN isn't kept up to date. I mentioned it for posterity of the authors, Dan Farmer and Wiese Venema. The historical value is there. SAINT, on the otherhand, is kept up-to-date. However, I don't usually recommend or use it because they have gone commercial, which is unfortunate. SARA has been a nice alternative that is Open Source and still available for whoever needs it.

That all said, it is important to remember not to rely on one tool to determine one's weakness but rather have a variety of tools. This is why it's not a bad idea to have a machine dedicated to this kind of thing that has all the "toys" you need.