I started out with plus iPhones, really just because that was the only way to get decent enough battery endurance. Now all iPhones (apart from the SE) offer decent enough battery, the smaller mainline iPhones (5.8" or 12 and later 6.1") offer close enough to the same experience with a little less to carry around.
Bigger than 6.7. I wish my 12 Pro Max was bigger. Of course I rarely carry a purse and have 0 issues carrying my 12PM in my work pants and shorts as well as my stretch jeans.
Should have been able to cast more than 1 vote, then i would have voted 5.4" and 5.8", this is my ideal size range for a smartphone in general. Interesting that the 5.4", 5.8" and 6.7" sizes are getting the most votes!