That's really interesting you say that! I would've thought the 6S to 11PM would've been a bigger upgrade, especially with the Face ID, the full screen, LED display, three cameras, etc.
I went a similar route: 6S+ to 11PM to 14PM. After I received the 14PM, have to admit I was a bit underwhelmed. The jump from the 6S+ to the 11PM made me use my phone differently, between the OLED screen, FaceID, and three cameras. I thought that 4-gen jump was a big deal. The 14PM didn’t seem like such a big upgrade at first, with only ProMotion really jumping out at me as a major new feature that I immediately appreciated.
Having said that, a month with the 14PM has changed my opinion. What I really appreciate is the improved processor, 6gb memory, and the much better, 5g Qualcomm modem. I’m warming up to camera improvements too, including the 48mp camera and sensor shift. Dynamic Island. . .eh, the biggest thing about it to me is the surprise during the announcement (no leaks beforehand); as a feature i think it needs to mature. The AOD lock screeen is fine, but i end up turning it off most days, as I have an Apple Watch too (I don’t need both of them on all the time)
In my opinion, the 14PM isn’t as radical a change in how you‘ll use your iPhone from the 11PM, which was still performing well. I think going from the 6S+ to the 11PM was a bigger, more noticeable hardware upgrade.
The only reason I upgraded was to get the $1000 trade in value from ATT during the 14PM launch. Now that I’m set, I’ll likely wait to see what the iPhone 17 brings to the table in a few years

.