The bounds of courtesy is, approximately, the bounderies imposed by the question. If the question is phrased "I want to do N with Carrara" then it only makes sense to describe how Carrara might approach N. If the question is phrased "I'm trying to do N and I have Carrara" it is legitimate to provide other options from comparison, not limited to other aps, purchasing a pre-made model, using a photograph, or giving up. Most of us use multiple applications. We have settled on certain combinations based on our available time, goals, and budget, but we are willing and interested to learn more about other options. However, I for one do not appreciate being lectured on my choise of software by someone who has neither my schedule or financial spreadsheet in front of him. Cross-fertilization is a good thing. Seeing how AM thinks about a mesh, or how C4d looks at project workflow, may give the user a fresh look at how Carrara does things and lead to new ways of using THAT program. Sometimes techniques can be borrowed wholesale. The key, though, to personal comportment on a a Carrara forum is not to post what "opinion" is important to oneself, but to post what is useful to others. Even an American should be able to appreciate that.