Any full doors Vs. the Yamaha doors, to me anyway, are worth the cost. With the Yamaha doors I could see an errant stick poking me in the gut and shisch-k-bobbing me to the seat, or my 3-year old. No thanks. Any full doors are worth the cost.The J-strong stuff seems a little over-priced to me for some plastic, but what is'nt in this Rhino game??