We had the Australian 2013 1/10 EP Nats in Mildura last week.
I ran my TRX-1 in the 540/21.5 class. Qualified 5th, finished 3rd. Control tyre was Proline Suburb M3.
Track was super grippy with a flowing layout.
TRX-1 was awesome to drive!
Young Mattie, who finished third, is younger than the TRX-1

I'll post some more pics, though non standard setup is:
RB5 rear CVD's with Kyosho outdrives.
JC B4 rear wheels
DE racing front wheels
B4 FT V1 rear shocks
Losi 12mm big bore springs
KO digital servo
Speed Passion Reventon Pro ESC - Blinky mode
Track Star 21.5 Brushless running 6:1 gearing.
JC Finnisher wing.
Gens Ace 5000mAH LiPo
Gearing limit is 6:1 when running 21.5.