Everyone's assessment of quality is different.Though I do appreciate all comments,I must admit that I have had my guage for about 6 or 7 years of trouble free service.The manual indicates the expected performance,and maintenance,and other than the fact that the unit's battery went on me during a very crucial time (I have just had my SOTA COSMOS updated,and was re-dialing parameters)it,to me,is a very good unit,if one follows the instruction manual.It is one of the few units that give accurate readings in the hundreths of a gram.I checked it against my pal's 700 dollar WINDS guage,and it was dead on.So,the hastle of replacing a battery every 6 years is no big deal,to me.In terms of differing readings,you MUST have the stylus tip hit the EXACT center of the indented area,otherwise readings aren't precise.Thanks for the well intended input.