well BK, i'll say this we "Both Know" which ones are not "Failing" so pretty much makes them reliable at "Our Track" heck even the Owner wont carry "BRAND X" but he'll carry Castle's, ORION's and a couple others....but now that the LRP's are out more(SPX8's) i bet he'll carry those too??
motors? the TEKIN's are DIALED!! the newer VECTOR 8's way better than the first batch! (Loving mine in my buggy!)
but for the buggy for sure get the new SPX8 a Castle or a XeRun but i would stay clear of "Brand X" (2 more failed Friday,3 more failed on Sunday)