I returned my iPad Pro 11" and exchanged it for a 12.9" model! Just for additional $200 more; you get alot more iPad functionality and it still great for one handed use too! I love it! The 11" felt sort of small when I was using it along side the 12.9" at the Apple store!
I found exactly the same thing.
I thought the new 12.9 would be to big but once I tried it in store then tried the 11" I found the 11" felt really small. Based on this I have decided in the next couple months I will be trading up to the 12.9.