It depends on what you are looking for and how much you’re willing to spend
If you have specific questions about any of the brands mentioned above, ask away.
Deviser makes great instruments from production to hand made (Bacchus, Momose, STR). I have owned all 3, still own a Momose and STR.
Atelier Z basses sound wonderful but are incredibly heavy.
FGN makes high performance yet affordable production instruments. They also tend to be a bit heavy.
Sugi makes what I feel are some of the finest instruments you will find. Exceptional by all measures. I own a 33” Sugi 5 string and I love it. I had also owned a used 35” 5 string that had a huge sound. I will probably pick up another one someday.
Harry’s Engineering (Dragonfly) are great and have gotten way better over the years. I had a 4-string Dragonfly single cut bass that was a ton of fun to play. Excellent balance, fantastic fretwork.
For the past couple of years Xotic has been very popular here. I own an Xotic 5 and had owned an Xotic 6. Outstanding basses with an incredibly friendly team here that has a boutique shop in Tokyo that is worth visiting.
Other brands that I have seen but not had as much experience with: Provision, Saito Guitars, Crews