To decide this you need to find out who they buy their panels from. Samsung and Panasonic probably don't make LCD panels, they buy from a 3rd party. And the odds are quite good that they buy from the same place, considering these are 2 very good TV manufacturers. Then it'll just come down to which you prefer. As for their reputation, I'd say their about equal. Do Olevia and Samsung buy LCD's from the same place? Very unlikely.