I briefly owned a Sandberg Nighthawk TM5. I returned it after 10 days. Build quality was great, it was light, balanced, and the neck was fantastic, up there with the best, most comfy necks I've played. It oozed "Really Nice Instrument" vibes. I dug the 18mm spacing.
But I didn't gel with it because the tone felt thin when I got it home through my rig, the dimensions of the neck pickup meant it was harder to anchor my thumb when playing the B string (they don't protrude past the strings as far as my other basses), and the way they do the bevel for the tummy cut into the forearm cutaway was much narrower than my other basses (G&Ls, Modulus), and it felt odd. I probably could have gotten used to it, but for that amount of $$, I figured if I didn't absolutely love it, I shouldn't keep it, so I returned it. Not saying it isn't worth the $$ they charge, it was an excellent, excellent instrument, but I didn't love it, so it went back.
The only downside I see to the EBMM 5er is the string spacing and neck being narrower, which is obviously subjective; some folks like it, others don't.