In my opinion rather a low end, rather than a mid ranger. Only the build construction and the Samsung brand, but I would prefer anytime a Chinese model. And is far from being polished and optimized: my S5 Duos has a better battery life with full HD Amoled display and consistently better CPU, GPU, WiFi and all the rest, even if the official numbers of the battery are lower.
But the review is topnotch quality as always and very polite.