I played several New Standard hybrids that sounded better than some of the overbuilt Juzeks from the 50s!
I played a mid century era juzek at a shop a while back, the thing looked nice but it just sounded a little dull and un-inspiring, not real loud.
I almost bought a Shen sb-150 this weekend, it was at a shop that I happened to stop in on a whim after an eye checkup...my pupils were dilated, seemed like a great deal for $1200. It sounded pretty nice, reminded me of my sb-200 I used to have. I went back to probably buy and noticed (my eyes were working better now) that the neck had been reset and the button had been broken. The bridge was on backwards and it had a stamp from a shop in N.C., I ended up passing...
I went home and played my old ugly german bass from maybe around 1900, a big boomy son of a gun with gut G and D strings and I thought why am I looking at basses. Just put a new neck on this bass...
I played a shen sb-88 in a different shop here, it sounded really awesome.
I played an old American Standard a few years ago in a guitar store and I definitely have one of those on my radar now.
I really want to play an sb-190.
I played an sb-180 at a shop in Tenn. and the shop smelled really herbal. I remember talking with the shop guy for a long time, played an old Kay that sounded great, pretty big and puffy and also we passed the sb-180 back and forth and talked played for a while. I left that shop thinking I should get an sb-180. lol.
Really, I think the best thing is to just try to play as many basses as you can get your hands on and find one that speaks to you. Different players want different characteristics, so you really have to play basses and figure out what you're looking for. If you're not too picky and want reliability and playability, find a shop that does good setup work and just get something with a good reputation, something you can trust and work on your playing...