I pondered the same thing when I was planning to have an HT. I was a diffuse thinner, some called me a NW5, but I had no totally bald areas. I was quoted 800 grafts. I though that was low but I didn't think I was bald enough for 3-4k worth of grafts. My 800 grafts was actually a 1600 fu strip doubled up. Bad move, it looked good where I had existing hair but was very unnatural looking where shock loss never returned. I should have had a 1,600 fu or more strip. I now have a total of 3,800 grafts and still need more. Your wallet might go before your donor hair. Expect your will be a NW5 or NW 6 and you can't go wrong.