I've used it, buddy still uses it. Smells good, seems to work. I'd say middle mid to high range as far as price goes. No better or no worse than anything else.
used it for many years. It does smell good but my power valves still carboned up. I switched to a 4-stroke and dont use it any more. If I would go back to a 2 stroke I wouldn't use it again. Can't justify the cost.