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I just picked up CC, figuring it would do at least to start with for my current exploration. I can't say I'm exactly tooo impressed. I'm far from ready to give up, and think I can in fact do what I wanted (investigate some phased arrary sensor designs) but I'd have to say my first few hours of play with CC have been as much frustrating as satisfyijng. How does the full blown mathematica 4.1 rate on these issues 1) the docs are pretty bad. I still have not figured out how to use units, the docs on that subject only reference the existince of the units controler and none of the examples show such. 2) 3D plots are really crude. Having to reselect a subplot type to change the view, then recalculate is a pathetic UI. Limited views and limited combinations, you can get a leftcneter view, but not if you also what higher resolution. The realtime subsplot type allows you to drag the view around, but then there are not even numbers on the axis. Which reminds me, there appears to be no way to label an axis with the function name or input that it is for. If the numbers cover the same range, how the heck do you tell which is which? Not being able to tag a variable with its graphic range (i.e. so it won't default to a bad guess every time) would be nice. 3) sluggish UI performance. I'm running this on a 500Mhz G4 mac, but it just doesn't have a 'crisp" feel. would be nice if there student or faculty price was extended to just non-profesional or non-commercial use as well.