So please tell me if you know any package(or addon\pluging for any package) has such a tool which most of other software don't have. To rephrase, the distinguishing modeling feature.
For example i've never used modo for modeling (only rendering), silo, cinema4d, new maya's modeling toolset, but the feature could be not so evident so you dont know about it even after some basic tutorials.
For example mentioned above "looptool" has cool relax feature which is not like softimage's relax or smooth, but more like polishing an edge loop or all parallel loops, it removes variations but really keeps the overall curvature. Or loft tool, which bridges edge loops also preserving cubic curvature of subdivision(if one specified), very neat everyday, i would say, everyminute tools.
Looptools also has other features, like "make circle" from edge loop, but almost all packages can do that, and for real, how often do you need it? so i'm not talking about something like that.
So I hope i've made myself clear (which is really a struggle sometimes