The last nationals were won with a 3-4 season old Irwin. VIC states were also won with an Irwin - this one new. All Irwins have been consistently fast since they first arrived on Mosquitos 4 years ago.

There are some very fast Goodall mains out there (including one I own) but the last few I've seen built are all different and some not so good. I don't understand why they vary so much.