Huh... The SPL De-Verb held its own pretty well in that comparison.   At $59 and less CPU intensive it seems like a good deal for this sort of thing.  And the only one I'd consider based on cost. 
 
Surprisingly, RX3 seemed to have the most artifacts overall, but of course it's an entire suite of apps so serves many purposes.
 
It is pretty cool to see what these plugins can do though, things that were near impossible 10 years ago.