In March this year I picked up a 1964 Hofner violin bass at Auction.
I've never played a German one but do have a contempory.
It has a wonderful neck, slim, not too shallow and comfortable.
I'll probably gig it at some point.
I just got a bee in my bonnet about wanting one.
Same with the Harlet Benton PB-50. It actually has a great neck, really great since I rolled the fingerboard edges, sounds amazing too. Gigged in my Police tribute
For me basses have to look cool, not too flashy (by which I mean, loads of knobs and sitches) and have 4 strings
Any colour, I have all colours including a neon pink Brian May guitar