Probably most of people know Samsung better and take Samsung's LED having better performance as granted, but from our experiences of using these 2 brands and we found the opposite fact. Please see the below test reports of the same led module using the same level

LED from both brands and you can see the results by yourselves. Amazed
Comparision item: 58inch long led strips
CCT: 4000K
Test conditions: IV(690mA), IF(35V)
Samsung LED: 281+Pro
Seoul LED: STW8A2PD-B1(HT)

Test resultns:
 Samsung: 4097lm, 171lm/W, 23.97W
 Seoul: 4256lm, 176lm/W, 24.13W

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