Preface: I am a pastor in AALC, not LCMS (although I had been in LCMS for many decades).
I have never been a fan of either the NIV (1984) or the ESV, for different reasons. This congregation has used the NIV for 25 years. Because the copyright use of the 1984 edition ends by Jan. 1, 2013, I am looking now at alternatives, including NIV 2011, GW, and possibly something else, but not ESV. Some have the ESV study bible for study purposes, which is okay, as well as the LCMS NIV Study Bible (1986), but not the ESV for public worship.
Sigh... In our spread out mountain communities, the unchurched rate is 90-95%, meaning at least 50% have never been in a church, and more have never opened a Bible, and few have an adequate reading ability (and even many members fall into this category). This is not a criticism of them, but an acknowledgement that we meet them where they are. Right now, it appears that NIV 2011 would be the least disruptive for the congregation, and still be effective for the new people.
In my initial study of NIV 2011, I think it is better than the 1984 edition. A few areas I think it took a step backward (not using saints as translation for αγιοι, inconsistently translated even in same chapter). Positively, they improved Acts 3:21, but left John 20:23 and 20:27, 1 Peter 3:21 unchanged, which needed to be changed (of course, ESV is wrong on John 20:23, too).