There’s more to the plus than just size. Dual cameras, 1 more gig of RAM, & bigger battery.
However, that said, I prefer to have a smaller phone as my daily driver, and leave my bigger screens to iPads and Android tablets. And I’m loving my regular sized iPhone 7.
For me Plus iPhone is the best, it has more features than the regular 4.7 iPhone, Dual camera,1080p display,longer battery life which is more important for me,
I think plus iPhone is best smartphone to carry if you have fairly large hands.
I've had a 6 since they were released, and we recently picked up a used 6+ (from a failing 5s) for my wife. I've been perfectly fine with the screen size on my phone, until she got hers. I'm now sold on the screen size and find that grippability, pocketability, and anything-ability is not an issue with the big one.
It absolutely matters, but which way you land is different for each person. I have been using big phones since before Apple made it cool and people used to laugh at me and my Note 2. Or as many people called it, my iPad. I don't want to go back to a small screen. Then other people like one handed use and have zero interest in a big phone. So it matters, but there isn't one correct answer for everyone. Use what works for you.
As many other have said, size definitely plays a vital role in how you use your device. The Plus size model is definitely aimed at media consumption. Having a bigger battery and higher resolution display helps a lot with watching videos and playing games.
The regular size version is aimed more at portability. Still providing a nice display but not as high rez. All depends on what you want.
I’ve been a Plus user ever since the day the 6 Plus launched. I love the larger screen real estate. The smaller devices are more pocketable but I rarely have an issue finding somewhere to put my Plus.
If you’re torn between the two sizes go to a store that carries both and have actual working models on display, and spend a few minutes with both. If you get the Plus and hate it there’s always a return period (just make sure whomever you’re buying from doesn’t have a restocking fee).
I replaced my 6 with a 7Plus a week ago, as my eyes 'just aren't what they used to be ' and in truth, neither are my fingers so the bigger size is a win-win that way. I'm still getting used to the size in my hand and that I have to keep it away from my shirt-pocket. Fortunately 99.99 % of the time I wear cargo-type shorts with the extra lower pocket on both sides so there's no chance of loose change or keys in the upper pockets damaging the phone. I use a tempered glass protector on the screen and a Belkin clear 'Sheer-Force' case so it's reasonably safe but am considering an Ottorbox folio type case to go all round, although I hate hiding the gloss black finish on the phone... But all in all for the Plus size.
My wife has used a 6plus since they came out, which is how I saw that it was so much easier on my eyes and adapted so well to the SwiftKey keyboard much better than my former iPhone 6...
I like iPhone 7 size for the ease of use from one hand operation point of view.
But I know the plus points of the Plus variant and it's more likely that I will choose plus.