I am going to get the summit soon and I think that dual vxls. The Tekin has mor power than the dual vxls but its not waterproof. If you just wanted speed or jumping (not recommended but u could) then Tekin is the way to go. But If you want to do a lot more stuff then the dual vxls are the way to go (but remember that I'd you do choose the dual vxls that u won't get the same speed as the Tekin). And I'm not trying to rip on Tekin because they make some awesome motors and ESCs. But personally I would go with the dual vxl BECAUSE they are waterproof, reliable and sensor less unlike the Tekin so u don't have the sensor thingy sticking out of the ESC just waiting to get pinched, ripped or torn. I don't really know if this helps u at all but I'm just putting this out there.