HK designed their system with the Bose stuff in mind.

the Nano would be the Bose Compact

the Elements would be the L1 stuff

Everyone has their own opinion and likes of sound, so I can only go on my own perspective.

I think the HK stuff sounds and performs more like pro audio gear, the Bose while great, I think shines when playing back pre-recorded music to a degree.

If you want, give me a call and I can go deeper into this