on the real dude. If you arent racing then go with the 8T. The TTR ST-1 is cheap price but not cheap built. Replacement parts are cheaper and its just tough as nails. Start comparing prices on parts and youll see.

TTR:

chassis -$32
diffs - $23 (complete w/ housing)
shocks - $22 (shock bodies only for the 8t or $22)


the list goes on man. the 8t RTR is the best overall package at $650 but the TTR ST-1 is the best bang for the buck. if you're on a budget and dont want to sacrifice performance/quality/etc. then the TTR ST-1 is the answer. if you the most well-equipped RTR and not on a budget then the 8ight-T RTR is the one.