I picked up an iPhone 6 Plus. Yes, the sucker is big, but it does fit in my pockets. Both pants and shirt. The bigger screen is nice. More real estate, better for view high res pictures and videos. The real plus of the larger size is the vastly improved battery life. This is due the all the extra space behind the screen being packed with a bigger battery. I can use Waze on the way to work, use the phone to check email and take notes all day, and then Waze on the way home. After all that, I still have a decent charge when I get home. It really is a big improvement over my iPhone 5.
The camera is also a big improvement. I typically use the Camera+ app for stills. I have it set to save giant TIF files. Gives you more data to work with in Lightroom, Pixelmator, or Picasa. The editing functions in Camera+ are also richer than the iOS defaults.