Hey Guys. For the youth ministry at my church, we are going to need to get some lavaliere mics. We could like to get two Sennheiser wireless lavaliere mics. It is going to be clipped on the person for some skits and for the talk (or sermon, or message, whatever... ). Should we get the omni EW 112 G2 or the cardioid EW 122 G2? Thanks in advance!