I believe that money spent going to the track and practicing is a better outcome than just buying the newest kit and thinking it will do all the work for you.
As for production kits...
Our hobby is an endless research and development for a better product much like full scale racing...any kits that are released as a 2.0 etc are for a reason. The company has spent many hours and dollars testing and it is all to bring our hobby to a higher level.