That's good to hear about the Nyvoll set... that's the one I was considering.
When I checked it out in store, it felt more solid than I expected. And I was thinking about medium brown too.
Yeah, I highly recommend it. Especially if you're looking for a bedframe. I wish it came in the gray/brown color that some of the Hemnes sets come in, but the medium brown is nice. Definitely better than the brown/black that Ikea uses for everything.
And although it may be a small and simple detail, I absolutely love how the end of the headboard is angled. Very well designed. When I sit against the headboard it lands flush against the wall. It works well for my place because there is a trim along the bottom of the walls (if the rear of the bed were straight, it would leave a gap that may cause issues with the assembly).
Not sure why more beds don't employ this design.