Opinions vary on QT Creator. I personally found it to be hostile to my desires. The little thing that made it unfit for my purpose was that, when I code for Cygwin use, I need my Windows editor to be configurable for Unix conventions, but QT Creator was not configurable to Unix conventions. Eclipse is configurable.

I believe if I had been making programs targeting QT, I might not have run into this issue. But I don't make that kind of program.