Just wanted to give my thought for people who are undecided between 6 and 6+, just my opinion.
I had an Iphone 5S upgraded to 6. but i tried the plus in store even though i felt it was big, i thought it was nice. 2 days with my 6 and was still thinking about the 6 plus. I didn't feel the iphone 6 was a big upgrade compared to 5S.
So today got the iphone 6 plus and love it so far, i know it is a bit more hassle to handle it with one hand but it has lot of positive aspects.
I like watching TV series, movies, youtube on my iphone, i travel often. I don't like taking my laptop with me most of the time.
Battery life is important for me. Went for the iphone with best battery life.
I browse a lot on my iphone and the 6 plus is awesome for that. so wanted to get the best Iphone for browsing websites.
also i don't like buying digital camera anymore. since 6 plus had better camera than than the 6 why not go for the best.
I believe the 6 plus will have optimised apps for the bigger screen in the long term which is a plus.
and of course i do lot of calls but always using my apple headphones.
I always wanted bigger screen, that's why i bought a note 3 couple months ago even though it was nice and liked it, i was so invested in apple eco system, app store, using a macbook and i have used every iphone since Iphone 3G. I wasn't happy leaving IOS.
Now when i look at my Iphone 5S it is so small.