I want a big Pro iPad. It's just so expensive after already buying a MBP. I won't be pushing it to the limit with computationally-heavy apps, but I'll be multitasking a lot, typing a lot, browsing a lot. Drawing some. Handwriting some. The Apple refub store has some 2015 models, but it's hard to compare "apples to apples" as they say, because the bundled memory was less when the 2015 models were new. Knowing there may be a whole new Pro model in 2018, and knowing Apple just jacked up the prices on the larger Pro models, do you think it's prudent to buy an older refurb one, or will it be better to get today's model in terms of total cost, total enjoyment, eventual resale value, etc? thank you.