I went with a knife. The tools overall don't get the best reviews from people who do a good deal of grafting. Search grafting, grafting tools, graft knife etc. on the top right or Google, Bing, etc. you'll get hours of reading and videos to make up your mind. If you go with a knife it's a good idea to tape your thumb with a few wraps. I didn't slice mine, but many do, and I imagine it is only a matter of time without it so in the future I will be wrapping mine. Good luck.