I'm comparing it with the Juno-106 plugout in my System-8 right now. The patches I've compared so far sound pretty close to identical…which is a good thing, because Roland's emulation is excellent too. However, I would definitely recommend Softube over the Roland Cloud (plugin) version, because Model 84 is much more CPU efficient.
As for the others…Arturia and TAL are both great, but they're Juno-60 emulations (some patches translate well between 60/106, and some don't). Cherry Audio's DCO-106 is decent, but it's not in the same league as the rest.