I own both of these speakers. My first question to you would be what size room & what is the main purpose for using for these speakers?
If it’s a smaller / medium room, then the Yamaha NS-2000 will easily fill those rooms.
if it’s a larger room (e.g. a living room) and you intend to use the Speakers for Audio & Visual duties the Diatone DS-5000 would be hard to beat.
In in terms of musical prowess, both are superb, with 1st place going to the Diatones. Not by a country mile, but in my mind & one of my audiophile mates mind the Diatones are more musical.
Also is speaker size an issue? I can carry my NS-2000s 48kg each.
The Diatones are 87kg, so you need a safe way to move them around.
Cabinet build quality is very similar, both are furniture grade quality - in fact they put my furniture to shame.
To give you an idea of the DS-5000 ability with movies. I previously owned a very decent Jamo 5.1 system - costing around $5000 in 2007. I watched Interstellar in 5.1 and it was very decent (pretty good movie too).
I was watching Interstellar the flashback flight scene where Joseph Cooper (McConaughey) a NASA pilot is flying in the earths atmosphere. With the Jamos it sounded really convincing. With the Diatones I was on board! Serious brown trouser time for real. It was sooooo realistic in hifi I’m glad I sold the Jamos!
The NS-2000 are far more common than the DS5000 in Japan. In terms of shipping Hifido shipped both of my speakers, and more recently my Yamaha GT-2000X. Their packaging is second to none. The NS-2000 were shipped double boxed - including original Yamaha NS-2000 cardboard packaging boxes. The Diatones were shipped in a wooden crate with bubble wrap, & crossbeams to hold them in place. Shipping from Hifido is expensive, however 3 sets speakers, 1 turntable and an original GT-2000 wooden rack all arrived Japan - Sydney without any issues.
Regarding the Diatone woofer surrounds maintenance, you can purchase via buyee direct from Japan an oil for around $12.
I hope this helps and best of luck!