Hi, everyone. I currently own E-PL1 with 14-42 and 20mm, and I'm very happy with them so far. However my friends have been asking me to take headshots for them lately and as great as 20mm is, I don't think it's very suitable for headshots.... So I'm thinking about picking a used manual lens. Budget around $100 (adapter excluded). The problem is I don't know which one.... I was thinking about Canon FD 50mm 1.4, Rokkor 50mm 1.4 MD or Hexanon 40mm 1.8. Any suggestions would be appreciated!