I drove faster on a Virgin, may be that's just because i got better lol(1st year Lotus, 2nd Virgin),
About the Virgin, I feel more stability through the corner, but always lose on the stright,
and the Lotus is a more violent car to drive, it require more focus than the Virgin.
but no doubt the HRT is the worst of the three,
it's slow on the straight and the grip is horrible (it's fun though)