If I had to choose between Wolf trap and Pier Six, I'd go Wolf Trap all the way. The acoustics are much better, and I'd prefer not having to deal with the Inner Harbor on a Thursday night. But I'm old and grumpy. That scene might actually appeal to some folks! At least the O's aren't in town that night.
As for Strathmore? You HAVE to make that show. What an amazing concert hall.
BTW, any idea what the blurb on the Wolf Trap site means when they say "this GRAMMY-winning ensemble reunites all the original members, including Howard Levy, on their last tour ever with fellow folk and bluegrass artists?" Anytime I see "last tour ever" and Flecktones in the same sentence, I get super nervous.