I do believe the entire thing is blown slightly out of proportion. The 12.9" is a little better for desk use, the 11" is a little better if you use your iPad a lot while standing/walking, while lying in bed, or while sitting on a couch/recliner holding it as oppose to attaching the keyboard folio and using it like a laptop. However, both can be used in either scenario and you'd be fine.
In my opinion it comes down to how you use your iPad, and what other devices you have. If I'm replacing a laptop, it would be the 12.9" hands down for me. If I already have a MB/MBP, I'd probably go 11" which to me compliments the MBs better. The only exception would be the 15" MBP, I would consider the 12.9" in that scenario especially if I had the iPhone XS Max.
I've had the 11" for a couple of weeks. I was sold on it. Said I wouldn't even try the 12.9" because I knew my use cases. Well, like many here, I stayed on MacRumors reading this thread and got curious about the 12.9". Picked it up a few days ago. Up until last night I was sold that I was keeping the 12.9". I had boxed up my 11" and everything. The wow factor of the 12.9" can't be denied. Well, last night I decided to open my 11" and give it a final look to make sure I would be at peace with my decision. I am now downloading everything back on to my 11" and will box up the 12.9".
For me and my use cases, the 11" is more practical. I have a 13" MBP and an iPhone X. A lot of the advantages I have on the 12.9", is offset by my 13" MBP. I carry my iPad everywhere with me. Most of my use is mobile use, couch, recliner, and bed. I also like to use my iPad in Portrait mode holding it in one hand. While the 12.9" isn't a ton heavier than the 11", the bigger size in general makes it weird to use in portrait mode and not very comfortable/practical.
Bottom line, discover your use cases. Don't fall for the hype here, God knows I almost did LOL. It's nothing wrong with getting different perspectives, but the one that matters the most is your own. In the end, they're both amazing devices and in my opinion it's a win win no matter which device you choose.
Great post. I sold my MacBook Pro 13" as I noticed I didn’t use it that much. But I still wanted a bigger screen running iOS. Apple really should release the shortcuts app on Mac. I have a iMac as well for computer needs. After testing both I landed on the 12,9". It fit best in my devices, iPhone XS, iMac 21,5" and now iPad 12,9"