I host large images between 500k and 700k. I store the original image along with 4 different resized versions. The resized images on average account for 35% of

I host large images between 500k and 700k. I store the original image along with 4 different resized versions. The resized images on average account for 35% of disk space. I store about 300GBs of images. The resized versions take up about 100GBs of the 300. If I were to then to add retina versions (2x) of each thumbnail, I might be running at 70%+ disk space being used up by thumbnails. imgix is very interesting, as it would cut my storage costs, decrease my user image upload times ( because I wouldn't have to resize after uploading ). Also I would be free to create 2x retina images, or even new thumbnail sizes as desired. Only things to justify, are the lock-in with using imgix ( re-writing my site to use it ) and the monthly cost.