I have a fleet of dual hunters, mine, wifes and kids, I also,have a WT01 which imo is much more fun. The WT01 is brushless, the extra torque this has, and the ability to baloon the tyres means I don't really run into any problems where I wish I had 4wd.
I'm a huge fan of the WT01/WR01 chassis, one of the recurrent problems we had was steering servo failure, that was on the cheap acoms jobbies. I ended up fitting metal servo mounts and a jumbo futaba bb metal geared servo, which quells wheelies with the brushless and steering is awesome. On the kids cars, we have gone with standard size savox metal geared servos which are holding up well, I only mention it in case anyone else has had this.
As an evolution of this chassis, for xmas I just received a WR02 WW2 which I'm really pleased with so far, it's basically a swb version of a WT01. Curious they didn't call it a WT02? Anyway, it looks like the wheelie bar may fit perfectly on the 01 chassis.
Another observation regarding the dual hunters and WT01, the gears in the WT01 are like a black nylon, as opposed to the cream gears on the dual hunters. I wonder therefore if they strengthened the gears later in the evolution of the chassis.
Cheers
Nito