I'm trying to decide on which buggy to get and I've narrowed it down to the Ofna PCR and the Kyosho Inferno MP7.5(not kanai).I'm really leaning towards the MP7.5 though simply because I like it and theirs lots of parts available for it.My question is what is the difference between the 7.5 kit and the 7.5 Sport?The Sport comes with an engine but it's 60$ cheaper than the kit which has no engine?Is their any other difference between the two that i'm missing and is this a good buggy for hard bashing?