I was in the same situation. Looking the both pro series kits. I chose the Hyper ST Kit and haven't regreted it yet. Plus, EVERYBODY here runs a LOSI Eight Truggy. I wanted to be different as everybody at my local track run an Eight. I am by no means saying the eight kit is bad, just my preference. Plus I could of gotten the Losi Eight kit for 425. I took the Hyper for 399.