XRAY - Model racing cars

I was wondering which of these are considered higher end/stronger. I've been looking to buy two different rollers, one has mainly graphite factory partss but a few aluminum things like steering blocks. The other has factory plastic steering blocks but aluminum top plate, center diff plate, chassis braces, and a few others. Which is a better deal? They are the same price.

Hello! Just tell us the 2 models! I think it doesn't depend only on the material, but it's a matter of overall reliability, handling, tuning options etc.