I have run Rogue Monoblocks for over 20 years starting with the 120s that were upgraded to 150s. That jump was massive. Better amp in all areas. They also ran much cooler as the 120s were mini space heaters.
I then sold the 150s and bought a pair of 180 darks. They have a bit more "darkness" and top end detail, but the difference between the 150s and 180 darks was very subtle. The most interesting thing is to my ear, they need to warm up at least an hour before they really get going. After that hour...they are a steal at the price point.
Also want to add that Rogue has splendid customer service. Usually Mark (the owner) responds personally. Just my 2 cents