Strongly recommend the no 4 clippers! I didn't fancy shaving my head but a close cut meant hairs were small when it all went. I don't know anyone who enjoyed letting it happen - I wasn't too fussed about losing it (ie not happy but not desolate) but losing large clumps at inopportune times must be quite offputting. I wanted to work through chemo if possible (and did) so wanted some control over what was happening. I chose to wear a wig, and did from the time I got my hair cut really short. I wore a sleep cap at night and emptied it out over the sink in the morning!! Best wishes.