128gb or 64gb iPhone 6 plus should I get?

I'm not getting a new phone for atleast 2 years from now so I wanna have the 128 gb but my bt thinks that the 64gb is enough
What do you think
Ps I don't have a phone now I just have an iPad
So I'm not willing to wait for the 6s

Added (1). Money is not the issue I have enough for the 128gb iPhone 6 plus model

Get 64gb you don't need much.

Get what YOU want, and what YOU can afford, just remember, if you need more than 64GB, you are stuck with 64GB. Also EVEN if you get the 128GB phone, you will still need to make at least, weekly backups to your computer or online of anything that you consider important to you, because even with a lot of phone storage, that storage does you no good if you have important pictures, contacts, email or text, and you phone has been lost, stolen or eaten by a bull moose in heat, and you have not backed up your phone for 6 months.

Get the 128GB I did and I'm glad I did. You will need it and I don't know where nexus is getting that you don't need much but you do. With all the latest software updates you will need it. You are much better off with more rather than less. But by the time you get a new phone the 6 will no longer be made it will probably be the IPHONE 7s plus

Better to have too much space than too little.