I love Tool but not a big fan of Undertow. I really like Fear Inoculum now after giving it a dozen or so listens. I think the sound quality is quite good. I bought the Hi Res download off of HD Tracks. Others complain it sounds compressed, but it really shines on my main rig. I hope that's a good thing.
Are there any Tool fans here?
I feel that Undertow is far superior sounding than any others, especially the new one. It was recorded at Sound City back in the day where some of the best albums were recorded. Its console was the Neve console that Dave Groul now owns. Vintage gear and Eqs on that console can not be reproduced.