I use to praise Hexagon as a great modeler for a novice to get familiar because at the time the price was right for a hobbyist but then development just stopped altogether. Silo was in the same barrel but development has started again and the newest version supports 64 bit OS and is also ported for Linux. i had to fire up Silo but found no Similar Selection unless it is Select by group which is not the same. I will admit that until after I got into the IT field I never believed free software could be as good as purchased (Yes very naive view learned rather quickly how foolish that way of thinking was so do not thrash me pleaase ;)) I have to say that being lucky to provide IT services for a few Graphic designers I had a chance to try out several various 3D application and would say as far as easy to learn 3ds Max was at the top Blender now being my choice not rich enough to afford max LOL Maya is not intuitive Modo is OK but think more of a learning curve like pre Blender 2.5 Cinema 4D a bit confusing. But back to topic it does not surprise me that you had the results you did with Hexagon 

 

Lobo3433

Blender Maya & 3D Forum Moderator 

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