They look quite similar. Im guessing td2 is 2 wheel drive and td4 is 4 wheel drive?
Anyway, im currently building the Optima Turbo which like the Egress, im really enjoying the challenge.
But.. after that's finished, im considering buying the td2 or 4. Really love the body yet hate the driver, those wheel guards and those front wheels/tyres on TD2!
Think ive talked myself into buying the TD2!