Do you really need the iPhone 6 or 6 Plus? Short answer is... No.
If you're an Apple fanboy, which I am admittedly, then you probably already have the slimmer, taller, sleeker, iPhone 6 (4.7" Retina HD Display) or 6 Plus (a phablet sized, 5.5" Retina HD Display. But if you're on the fence about upgrading.... Don't rush. It is a beautiful device, and it is very quick, has great mult-tasking capabilities (beats out the Samsung Galaxy S5 and the HTC One M8 in speed tests, despite being criticized for having only 1gb of RAM). The 8-megapixel camera is said to be one of the best on the market, and has an improved, crisper, louder external speaker. The iPhone doesn't just bend under normal circumstances as the media has portrayed to, it takes an excess of 90lbs to bend the iPhone 6 Plus. There are a few things that I do not like about the iPhone 6. I don't like that they moved the Power/Sleep button to the right side of the screen. My left index finger hits it wayyy to easily. Also, awkwardly enough, there are now 2 accelerometers in the iPhone 6 as compared to one in every previous model. Even more awkward, my iPhone 6 doesn't change orientation in Youtube and Safari when rotated. Not everytime, but seems like 3 out of 10 times I change orientation, it doesn't want to change. The iPhone 6 is still almost too big for me. I think I still prefer the iPhone 5S to the iPhone 6 at the moment. Let's give it a few weeks (and maybe a few iOS updates) and we'll see if it wins me over!