Hi all, I am currently using an iPad 3, and while it still performs reasonably well, I notice it is starting to lag noticeably under IOS7. I am thinking of upgrading to an iPad mini 2, but would like to know more about what sort of improvements i can expect. Some background, I am a teacher using my iPad in my daily classroom teaching. I mirror it to my smartboard using my macbook running the airserver app. I often refer to assignments in the Notability app (saved as pdfs) and find that the larger files tend to take quite a while to render. I also use it for a variety of other productivity and entertainment-related tasks, such as iWorks, gaming, and news reading using apps like Zite, and well, everything just feels a few seconds slower than they should. Would the iPad mini 2, with its more powerful GPU, allow the pdfs to render faster? Has anyone upgraded this way, and care to share your experiences? Much appreciated.