well for me one major point is not to have a 4 whell drive off road car that is a t/c conversion from the manufacturer. especially any open type diff. set-ups. because of where you live the mrc might be the best bet due to parts support. if you want the best car the BJ4WE kit is by far the superior car. the tamiya is a tamiya( yes better but still tamiya) also it still has exposed diffs. thats alot of dirt for any diff. now though with so many 4wheels out, this year it will all be your preference, but parts avaliability is always a strong reason to buy any car.