I can also vouch for Denon quality. With only one exception, I’ve been using their gear now since 1993 and every single piece has been built like a bloody tank, which is a very good thing because it seriously took my service guy almost an hour just to open up a 6000mk1, let alone actually do any work on the thing.
https://www.youtube.com/watch?v=31fhfzhQgvk <– Watch video for how to open the 6000 in 500 easy to follow steps!
Jokes aside, if you’re thinking mobile, the 6000 is the best product out there for you. The 2-channel 4000 will be an excellent option too for mobile by the looks of it (available later this summer). I also used my 6000 in the club for almost 3 years so they can pull that duty too without issue.