I have the EVO3SE and it's a great car. There were problems with the front oneway gears stripping but I posted on the EVO3 thread how to easily fix it and I expect the new longer driveshaft will make it even easier to fix.
As far as breaking any other parts, I have bent some hinge pins but you almost have to TRY to break anything else!!
If you are considering the Pro 4 you might wait until there are parts availability because it comes with the oneway and no extra parts.