Also a 64GB iPhone 6 Plus owner and it's been getting noticeably sluggier since iOS 10 for me. Definitely upgrading this year, but I'm done with iPhone after 8 years. The iPhone X price and storage options have only confirmed my decision. I made it my personal pledge to not settle with 64GB for my next phone as it's simply not enough to get the most out of your phone. With only 64GB and 256GB options available for the iPhone X, it's a joke. It's either all or nothing. You'd expect a 128GB storage option as 4K video recording will eat up the storage in no time and there's now way i'd pay £999 for 64GB of storage.My current 6+ is getting sluggish and that's probably because it's 64gb is full. So my options must be more than 64gb which is why price wise the X is out.