I would put XRAY first in terms of quality..Losi second in terms of innovation, design and victories, as well as parts available..Kyosho 3rd because Kyosho is King..Tamiya is going to be a force to be reckoned with..Mugen and AE are also awesome, but I see them break allot. Let me just say before people start bashing me.. I race at The Nitro Pit..It is HUGE!! We have people driving every factory on the market right now except Tamiya...Every week someone breaks something, its hardly ever XRAY, and Losi wins mostly because 30 people drive Losi compared to 10-15 of all other brands, so I am speaking from experience I see what wins, what breaks, what is fast, and what is Junk..I will not comment on what I think is Junk as it does no good