with my ta05 and 3racing chassis + shock towers, trf shocks and spool, with ib4200 cells, futaba 9550, and a brushed motor setup, the car weighed in at 1560gr, quite heavy.
The more expensive, top end cars are lighter and also have more adjustment to them.
Thats not to say the ta05 isnt competitive because it is, especially at club level, but if you are very consistant in your lap times, the top end cars can be dialled in that little bit better sometimes, and maybe with less weight you'll get some quicker laps in.
Fusion Hobbies / www.horshamrc.org
The wife stops me being sane and the r/c stops me from going insane....