simpsons recommendation

I'm pleased with my two. Both for different reasons.

The Milk Churn as its good with soft soaps, it has a lovely handle, but on the downside it clanks around the bowl sides.

The B1 as its good with hard soaps, it's smaller making it a good travel brush.

So really it depends on what you ant to spend and what you'll be using it for.
 
will be mainly used for hard soaps .
 
For that my fav is a Duke 2/3. Something with a bit more scrub would be a chubby 1.

57's are also nice but I've never tried one in best badger. Mine is in super 2 band.