Body Support

The Alter Ego Basso is my favorite... as evidenced by my avatar. It feels most like a big bass to me; and you can actually change the angle of that large bout a little if you like standing slightly behind the instrument.

 

Depends on how you play it.
Seated is my prefered position now, and helps to get the bass fully stabilized.

 

I agree with eub player. I always play the bsx allegro sitting. I don't even use the tummy rest .
It takes a little while to get used to it. If I'm playing a standing gig or jam I use the DB.
The Eminence has a special end pin that doesn't wobble and I've seen lots of folks play it standing.
If you're not trying yo get a DB sound , lots of guys play stick basses that come with stands.

 

The best way to not fight the instrument is to use a tripod or tom-stand instead of an end pin.
It isn't a DB, you don't have to hold it like one.

 

Although they're not manufactured anymore, Azola basses are surprisingly comfortable in this respect. I didn't think they would be, since the body support is essentially a twisted piece of metal. But the balance is right and the fit is good: the ergonomic essentials have a good equivalence to playing a double bass. Try one if you get the chance.

 

The Yamaha Silent Bass works great, it's a lot more useful than the NS basses because of the frame.