I got a coated ronix line a while back, and from the start it had some stretch in it. about a foot of stretch in 80 feet actually. but that went away after a few rides. but after 4 or 5 trips out the coating started to bunch up and peel off in spots. I wasn't impressed with it at all. so i put it on the bottom of my spool on my winch just as an extra little bit if i'm hitting a longer spot. i figure you can never have to much line.
but for their handles. AWESOME
i recommend the accurate A line. we have been using one for over a year now, and we go pretty much every weekend and it shows no wear, no snags on the coating, nothing. its in perfect shape. I'm sure this next part was just pure luck. but i ran over our line once, and it wrapped around the prop a good five times. no nicks or anything. no damage at all. that's still the line we use most often and that was about a year ago. my point though, the coating takes a beating. highly recommend it.