RE: knight disc or tc omega?
I had a Remington ML700 (bolt style ML) and sold it. Bought an Encore (same basic barrel/breech plug design as Omega). Encore is MUCH easier to clean due to not having the bolt action reciever and all of its nooks and crannys to gather gook. Makes a big difference when field cleaning because it is vastly faster to remove the breech plug.
On the other hand I' ve never cleaned a Knight, so what do I know?