If a Samsung Galaxy S had a baby with a Nexus 4 or Huawei Ascend P7, it would look like the S6. The S6 edge looks cooler but perhaps not worth $100-$150 looking cooler. The software features seem gimmicky right now with some needed time in the future to refine them.
The S6 just feels more comfortable and natural to hold esp if you already got used to One M8, iPhone 6, and Xperia Z3. S6 looks better in person than in photos or videos. Likewise for S6 edge too. Perhaps only on par with the Xperia Z series, Nexus 4, P8, and several other models who still try emulating Apple's iPhone 4 series glass design. The iPhone 6 series' HTC One wannabe antenna bands were more of an eyesore than the S6 series camera hump, and they still sold in record numbers and were easy to cover up with a case. And it isn't like the S6 specs are Alpha quality. The internals are just as improved as the exterior. Fastest SoC surpassing the overheating SD810 from Qualcomm.
It was a good move by Samsung to release two variants of the S6 like Apple did with the iPhone 6/6 Plus. For yuppie hipsters, S6 edge is it. For regular folks, S6 is good enough and you can save money too. And if you want sd slot and water-resist retaining two of the three features from S5, S6 Active is it. Samsung covered alot of bases. Apple and Samsung are the only real contenders at the throne for OEM's like Apple vs Google in mobile OS. Love them or hate them, expect record-breaking sales for Samsung. Too much SIX APPEAL...