We got a bugaboo and its gorgeous ❤️
The nuna is much easier to collapse than the bugaboo (at least the version we shopped for a year and a half ago). We found the bugaboo you had to apply breaks and have wheels in certain directions. The nuna really is lift the latches on the handle bar and collapse. We've loved it, not a single complaint (apart from we decided to not get one which could be made into a double and now regretting that!)
No issues with the above on the new bugaboo fox 5 - super easy to collapse!