Choosing the device

We’re considering going 1:1 iPad with our KS2 children from September, but the question is about which particular model to go for.  We’ve been using iPad mini with children for the last three years now, and it hit the sweet spot in terms of its size, price and weight. To go 1:1, we’ll be looking at an operational lease, but there is a bit of a tough choice to make about the exact model for the budget we have. Here’s a table to explain the problem…

iPad Model Storage Lease length Positives Negatives
iPad mini 2 32GB  3 years  + Good amount of storage  – Older hardware so will feel old at end of lease
iPad mini 4 16GB  3 years  + Fast hardware  – Storage space will fill up quickly
iPad mini 4 64GB  4 years  + Fast hardware
+ Great amount of storage
– Can hardware last four years?

Perhaps, when it’s presented like that, the solution is obvious?