I watched a rerun of Fifth Gear that pitted the Zenos, Radical, Atom, and 620R against each other in a series of knock out tests. The tests and order were chosen in such a way that the Atom and 620R would be pitted against each other in a short race at the end. Although it's not surprising that the mid engined Atom would have a lot more traction out of corners, I was a bit surprised how unstable the 620R looked. Croc, as I recall you've driven one on track. Does this mirror your experience?

Fast forward 52 seconds for the track action.