hi. im in the market. iv got a inferno 7.5 sports RTR. i want to upgrade. i have been looking at the hyper 7. and dont know if i should go with the TQ RTR or the TQ 28 RTR. i only want it for bashing, mostly on tarmac and short grass, ocassional jumps on construction site. what are the pros and cons of each and what one would you recommend? thankz alot.