IPhone 6 Plus 64gb or iPhone 6s Plus 16gb?

I can get either one for the same price, but I can't decide which. Older model phone with more storage, or new model with less storage. IPhone 6s Plus 64gb is not an option.
I mainly use the phone for texting, taking pictures (not very often, currently have an iPhone 5s, had it 2 years and has 500 pictures) and downloading apps like games, social, entertainment etc.
So, do I get the 6s plus with 16gb or 6 plus with 64gb?

Added (1). Do the advantages of the 6s outweigh those of the 6

IPhone 6 plus 64gb because you'll get a lot of pictures and apps and games. It'll get slow if you fill up the storage so get the 64 gb. Plus it costs the same right.

If that's all you use the phone for, then it would be stupid to get the 6s Plus 16GB.

The extra storage is a lot more useful than a few extra bells and whistles. Also, a poverty-spec model with a paltry 16GB doesn't hold it's value as well as a higher specified model because it simply isn't as usable.

Better still, get a good used iPhone 6 Plus 128GB. That will be even more useful, even cheaper, and will not only hold it's value better but will have an excellent chance of still being completely useful and usable in two or three years time.

Go a generation older. 16GB will drive you insane.