"Frugality ... is a philosophy in which one does not trust, or is deeply wary of "expert" knowledge, often from commercial markets or corporate cultures, claiming to know what is in the best economic, material, or spiritual interests of the individual." (Wikipedia)
Ed[/QUOTE)
This is precisely why the word "Frugal" is problematic - it is both vague and highly subjective. It is Wikipedia's primary and most common use of the word "frugal" I find problematic: "Frugality (also known as thrift or thriftiness ) is the practice of acquiring goods and services at minimum cost, achieved via economical restraints or creative measures." (Wikipedia)
Frugality, in the philosophical/theological context, implies not wasting resources on ones self that could otherwise be used to help others - as this is sinful behavior by puritanical standards. Without delving into a semantic quagmire, I think "Porro" gets right to the point. The target audience of this forum would not be the manufacturers, but rather birders who, I feel, have been misled into believing a second rate roof-prism bin is preferable to a first rate porro - both being similarly priced. Those of us who know better, by virtue of our passion and experience - and having no financial incentive - can perhaps do a service to those who don't.