There are not that many out there. There is no conscensus among physicians which is best. If I were having one put in my eye I would choose the Tecnis Aspheric.
JCH III MD
Each of the three manufacturers of aspheric lenses claims that their product is best. I could find no studies comparing the three when I tried researching that issue before my own cataract surgery. (My preference had been for Tecnis, mainly because I loved their patient education video at www.tecnisiol.com.) But my surgeon only used AcrySof lenses, so that is what I got--with excellent results. My suggestion is to choose the best surgeon in your area and use whatever aspheric lens s/he has experience with.