I have an 18 X 24 push roller and I would like to get a bigger/heavier tow behind but I can't decide on what size. It's either an 18" X 36"(400lbs) or an 18" X 48"(550lbs), both poly rollers. I'm not too concerned with the difference in weight but I'm wondering if the width makes any difference in effectiveness or performance as I don't have much experience with rolling. For example would one gouge the lawn more than the other when turning, or being made of poly, would the 48" be more prone to flexing in the middle when full and not do as good of a job as the 36"? Minor details I know but I thought if there was someone out there who has tried several rollers they might be able to offer some pros/cons of size/type etc. Thanks a lot for any advice.