I’m not sure what the differences are between the various reflective tapes, it may be minimal for our purposes. I know when I read the SOLAS (Safety Of Life At Sea) stuff was used on lifejackets that made up my mind. I initially bought two 15″ strips from a local marine store for about $20 I think. I’ve just ordered a 30’x1″ roll for $40 from a n online store (http://www.colebrothers.com/solas/) so hopefully I’m not going to get ripped off. I hate buying from unknown websites.