Orecks
I wouldnt call them rubbish. They are great performers in certain situations.
Example: Glued down commercial carpeting.
A Kirby has so much suction that it clamps down hard, cutting off airflow and become very hard to push. Models with tech drive do better, but you can hear the transmission straining.
An Oreck has a very dense, high speed brush roll which does a much better job at flicking up dirt into the airflow. Even with low suction, it maintains good airflow with the large dirt bag. That huge dirt capacity is also great for commercial work. Their lightweight is also nice when you have to lug them all over a large commercial building or up stairs. They are also quite durable, which puts it ahead of alot of modern Hoovers.
Now I wont argue that they are rubbish on high pile plush and frizze. The company even knew this, hence the XL21 redesign, vast improvement on thicker carpets. I have a Pilot and its performance is hard to knock. No, its not a Kirby, but its not trying to be. Apples and oranges.
But I wouldnt bash it too hard. Its been around a long time and has been highly successful. Its design has been copied many times as well. That in itself should show that it has many good qualities.
Just try to be more open minded before calling something rubbish.
Believe it or not, but Orecks are some of my least favorite vacuum cleaners!