One thing I can say at this point: we are both satisfied.
The iPhone 6 corresponds with its curves just my taste as before the 5s. Since it is larger and flatter, I do not compare it with the 5s.
Performance is exalted as the 5s already beyond doubt. Since jerky nothing, everything runs smoothly and does what it should. 1GB Ram appear today no longer appropriate, but as Apple optimizes the operating system has no equal. A similar smooth work I have so far experienced only the Lumia 930 (that yes 2 GB Ram). So hardware data are one thing, but if the software is optimally matched, even less is sufficient for more. Benchmarks often say little from the user feeling is there more important. And that says: The iPhone 6 is running really fast!
The camera is in my opinion scarcely improved, but also because there was little reason to do so. It is illuminated when shooting with the flash, the environment a little better than the 5s and you can still create better slow motion video, but I do not need. What I mean to say: the camera is great! Sharp images, faster shutter speed autofocus. More needs a cell phone clippers can not. For everything else, there are cameras.
The battery was my only concern before buying, because some tests have pointed out the weakness of the battery of the iPhone 6. Since the iPhone 5s from all iPhones so far proved the best endurance, I was skeptical, but I am now reassured. Throughout the day I'll loose it. With regular use, I already came with the first full charge in about 7 hours of use at a standby time of 1 day and 11 hours. This is not quite as good as the 5s, but it's enough for me loose with my application mix from.
Who is heavy users and frequently has the display on, in the evening need electricity, but since most devices almost indistinguishable.
The aforementioned display is typical iPhone-realistic colors and not too gaudy, but has a high maximum brightness (I usually set 50% brightness) and a higher contrast than its predecessor and a good picture can be read outdoors. The fact that the resolution is not full HD, does not itch. Focus is sharp, even sharper eye can indeed see, but in usage no real value on such a small display size. This is on 40 inch TVs may be different. When mobile playing again until 5 inches a part.
The new dictionary function of ios 8 like it very much and is learning more every day. Siri I use rarely, I can say nothing.
What I also like: The phone acoustics. The received values are with me (e-Plus network, mostly city) usually good and my phone partner I understand well and me too.
The criticism that the camera lens protrudes, I can not understand. I'd rather have a sleek device - and my machine is shaking on the table hardly. So this is a visual thing, which I do not bother me.
Conclusion: The iPhone 6 is not much better than the iPhone 5s. But a bit already. And 5s Beginning class, gets the iPhone 6 the same predicate and of me 5 stars. Because the 4.7 inches of the actual value and the right place, I want after a week already no other iPhone have more.