Belden is widely recognized as a top supplier of ordinary magnet wire, but the definition of "quality" varies based on specific needs. For high-purity and specialty applications, companies like MWS offer superior options, including square cross-section wires for better conductivity. Specialty suppliers exist for military and space-grade magnet wire with unique insulation requirements. The discussion highlights that for basic solid core electromagnets, performance may be satisfactory with brands like Parawire. Overall, while Belden is recommended, the best choice depends on the intended application and specifications.