On my 1198, there's several M'Way entrance roads that are long and isolated from the 'slow lane' nr me, I always enjoyed opening it right up and banging through the gears on those. The 'shove' you'd get is addictive. I particularly love the A21 to M25 one. A nice sweeper to start with, which straightens....boom
yes there are a few good sweeping slips that end of the a21, nothing like banking it over and opening it up!