I’m a long time Apple user and iOS user so for me, the experience of using the iPhones is always consistent. I had an iPhone 5s then got the iPhone 6 as the 6 Plus seemed way too big of a jump. After a few months with the 6 a buddy of mine got the 6 Plus and I got to mess with his phone several times. I decided to sell my 6 and get the 64GB 6 Plus and after several days with it, there is no going back. The way we use our smartphones, phablets, etc means that more screen real estate only makes sense.
My wife has a 6 and she swore she would not want a larger phone but now after seeing the Plus she is thinking maybe going with that option next time. I don’t find it much more challenging to use than the 6 was plus all of the benefits of a larger display offset any cons for me. The 6 Plus may not offer all of the multifunction capability of some of the competitor phablets or may not offer the highest screen res, or highest specs on paper, but it does everything well. It excels in all areas and has the consistency and simplicity in the experience I’ve come to expect out of Apple products. It’s an excellent device and I already look forward to what comes in expanded functionality for the iPhone Plus phones in the future.