The lastest will not alway be the greatest. Yes, the Mtx-3 might be a older car then the 710 but I know many other peoples for sure will still take the Mtx-3 over it in this forum. Pretty soon Serpent will release a newer version of the 710. If everybody buy the 710 because is newer then who is going to buy the Mtx-3? But to me any car can win, it mostly depend on the driver and the car set-up. If you have a crappy driver with a 710 that worth about $1000 and a good driver with a $500 Mtx-3 still can beat the 710. Mugen could of updated the Mtx-3 with the Prospec coming out but instead they kept the same spec and just included better parts for the Mtx-3, that probably tell you something that there car is good enough that does not need update for right now. Since the Prospec just came out I can guranteed it will still take a while for them to release the Mtx-4. Also I don't think that guys in here that bought the Prospec or the 710 wasted there money because I'm pretty sure is worth every cents. Soon there will be a bet
I had a 710, and now i bought the MTX3, why? because I tryed an MTX3 and it worked for me. The car is 3 years old, (something i didnt know until now) but keep in mind that the although the 710 is new, not everything that shines is gold !
As far as an MRX4..? they are still working in the MTX4, I think it will be a while before they make a MTX4.
Honestly, I would research MTX3 vrs Serpent 710 and buy which ever car you like best based on features and looks. I think the MTX3 has a better layout compared the 710, its more like an 8th scale; IT IS STRONGER. The 710 is made out of glass.