I've upgraded to a 5dIII, sold my EF-s 60mm macro and now I'm stuck. Do I buy the EF 100mm macro or just use my EF 24-105mm L lens. I used the 60mm for flower photos and portraits. Should I purchase a new macro or just use the EF 24-105mm L? I've used the 24-105 several times for flowers with good results so I'm thinking I should use the money on a different lens. Thoughts?