Looking for Heroic groups

Hello Death Jesters. With the completion of my keys for heroic instances has come a interesting situation - finding groups that don't suck. I'm making the rounds, asking guilds with good player bases to consider me the next time their instance needs a healer. All I ask is one chance. I'm a 70 priest with experience in just about every instance. Thanks in advance.
-Deana
-Deana