Here's what's interesting: I was a Plus and then Max iPhone user for years. If you look at the specs when they made the switch to the flat-sided 12 Pro Max design, there was virtually no difference in thickness, overall size and weight vs the Pro 11 Max. But the 12 Pro Max felt like an absolute brick whereas the 11 did not. I can't explain why, the specs say otherwise, perhaps it's just the flat sides... but I know that I regretted getting the 12 Pro Max, I switched to the smaller Pro when I got my 13 and I'm much happier with the smaller form factor in the flat-sided design. Here's what's also interesting: for years I cursed the curved sides on iPhone because I found they made holding the phone so slippery--I kept thinking, "Why don't they bring back the flat sides of the iPhone 4/5?" Well... be careful what you wish for. While the flat sides do make the phone feel much more stable in-hand, the feel and look of the phone is much bulkier and brick-like. The curved sides definitely looked and felt more svelte.