Thanks Juraj :)
Since this is the corona forum I think it's not right to list the advantages of a competitor here. Redshift also has quite a few drawbacks but half of what has been said is just not correct the way it was said.
Long story short: redshift is not a one-click renderer (as corona is) and requires time to read the documentation and learn the details. In terms of quality I still see no reason why you shouldn't be able to produce as high quality renderings as in corona - but I definitely think that a lot of corona users won't have fun with redshift if they don't like vray.
I suggest to have a look in this Facebook group
https://www.facebook.com/groups/RedshiftRender for a better "overview" of what is being done with Redshift these days (instead of their gallery). One example for the archviz business (and for completely nonsense rendersettings unfortunately):
https://www.facebook.com/groups/RedshiftRender/permalink/376257112823505/