I was given an Aeris Accel and recently used it on a dive trip. My first impressions of the fins: they are extremely light, small and have a very short blade similar to snorkeling fins. I was surprised at how efficient they work underwater with a variety of fining styles. They performed very well (similar to my previous mares fins) in the frog kick, sculling and flutter kick. I will recommend the Accel if you are a leisure diver going to tropical destinations, but if intend or are doing technical or coldwater diving, then perhaps jet fins may be more suitable.