Clover is my "go to" seam ripper. I inherited my stash and also lots of tools. Included were a life time pile of seam rippers of every variety. I began to us use them and soon discovered why there were so many. Most were not sharp enough to do the job. I began to toss out the ones that made the work harder rather that easier. Got down to the blue handled Dritz and eventually purchased the Clover because so many of my quilting friends were using that brand. Well, the sun rose, the birds began to sing, the sky became blue and I began to smile when I opened the package and used that little gem. Easy to use, fits my hand and has stayed sharp for about four years now.