Of course most people believe that size matters

, and for the most part that is true. If you use the right materials then the larger you go the stronger it will be, but all three of them will hold up if they are of metal construction. With increased power you need to install a metal drivetrain

. Your truck looks like a pretty good build, and seems to be tuogh enough, but how many real size vehicles do you see on the road with plastic parts used in the chassis or other structural parts. Plastic is only used for cosmetics, not for strength and support. If you want to have a vehicle that will take almost anything you throw at it, then you have to go metal all the way and build in soft points to absorb impacts. Plastic will break no matter how careful you drive. Sooner than later you will hit something and break the RPM gear and if you have a weak drivetrain it will break as well. Especially if you have brushless power under the hood. 10 to 15 lbs of metal and plastic going 30 to 40 mph will cause some damage. If you want it to last build it from steel, aluminum, and titanium. If you travle around through this forum that is what you will see in the ultimate vehicles by the people who want their trucks to be bulletproof

. Good luck with that

.