I was bought an Attack new last November and I have no regrests not buying a Marder. It comes with some of the 'needed' hopups for a Marder included. Marder spares are roughly 80%+ compatible, so parts (bumper for instance) are totally different. Spares are easy to get from Hobbytek in Germany. I placed an order for spare shocks (I bent one!) and some other bits n bobs and it arrived in less than 5 days. IMO the standard tyres give more grip the the stock Marder and the 23cc engine is plenty powerful enough for 1/5 scale unless you race
It handles like the Marder, fine until you hit a big rut or jump or the best one is fast in to a bend then it tumbles. I am sure it's the setup of my Attack and Bro-in-Laws Marder that they do this, but we don't race, it's just some fun for us. The bumper is definately different, the Attacks comes standard with Alloy shocks, so I would use them over FG shocks. I think the A arms are different, but to be honest I have not really compared against a Marder. The alloy hopups for the engine work a treat as mine is a CY 23cc engine. Also the shell is different in the way it fits to the chassis (dont have to remove rear wing) and I prefer the Attack over the Marder.