All i can say is, dont go for the INferno. I have got one, had it a month and upgraded the the hyper 7 TQ RTR, if your planning on bashing it, the Inferno will Always break IMO. I broke mine evrytime i took it out, and i was only taking it on a school playground and field! IMO the 7.5 is a very weak buggy compared to the hyper. Wouldnt have a clue about the jammin though, but have only hear good things about them.