Who should I start at WR this week? HELP PLEASE!?

Im so definately benching Maurice Jones-Drew so I will be starting a WR at the flex position. My top 4 WRs are Wes Welker (vs Mia) Chris Chambers (vs NYJ) Desean Jackson (vs Pit) and Hines Ward (vs Phi). So I can only play three and I don't know which 3 to start. Patriots are playing the Dolphins, Chambers had a great Week 2, Desean Jackson has had 2 100 yard games, and Ward is clearly Ben's #1 and has scored in both weeks. Please help!