The iPad 3 (Model A1416) running iOS 5.1.1 is highly regarded by collectors for its fluid, responsive performance compared to later, slower iOS versions. This specific configuration preserves the original skeuomorphic design and avoids the performance constraints later updates imposed on the A5X chip. For a demonstration of an iPad 3 on this firmware, watch this YouTube video . Unboxing an iPad 3 still running iOS 5.1.1