Emotional Intelligence (EQ) is attributed with success in life and work in general. But to know, develop and measure EQ it is needed to know the important theories and scales to measure it. The current paper evaluates four influential models i.e. Bar-On Emotional Quotient Inventory (Bar-On EQi), Emotional Competency Inventory (ECI), Emotional Intelligence Quotient (EIQ) and Goleman Clusters. The current paper juxtapose the elements of these influential models to present how similar or disparate the construct of EQ is presented in literature by the gurus in the field. An effort is made to highlight their strengths and weaknesses after critical evaluation. Literature review revealed that generally impression among researchers is that it is difficult to measure emotional intelligence and that no truly robust measure exists as yet (Goleman, 1996 as cited in Dulewicz & Higgs, 2000a). The reason could be that developing sound measures is an arduous and lengthy process; many researchers take shortcuts or simply avoid the process altogether (Schmitt, 1991). This Research aims to identify the crucial gaps in the widely used measures, as if the measure does not holistically account for all the important dimension of EQ the results might not show the total potential of EQ in entirety. Since the aforementioned models differ in their constructs a case has been made to follow an integrative approach incorporating elements of dominant EQ models which works in multi-level to better explain the EQ construct.