New Tool is basically a different band than the old one IMO. At this point in my life I relate to 10,000 days far more than my favorite album of the past, Aenima. Many of my friends say undertow is the best. I think it all is what you are looking for.
Tool is the shit. You can't really go wrong with any of it. AEnima is my personal fave. I just seen them for the first time back in August. The best show I have ever seen, and I have seen quite a few. Mind blowing