Has anyone used the backpack blower rack from Northern tools? I just bought an Echo 620 and need a rack for it but don't want to spend a ton. I always get 10% coupons from them and they are close by. Just wondering if it is worth the money or should I spend more and get a well known rack. http://www.northerntool.com/webapp/wcs/stores/servlet/product_6970_200055424_200055424 Thanks guys.