i and many of us here in adelaide have the hobao(ofna) gpx4. quite fast, very adjustable and good feature set. quite cheap relative to the dedicated racers like mugen, kyosho, serpent too.
KO Propo EX-1 KIY
TLR 22 - Tekin Rs Pro/Redline 7.5
AE 44.2 - Tekin Rs Pro/Reedy Sonic 5.0
3Racing Sakura Zero S - Hobbywing 60a/9.0