I have operated two DX contests and one domestic contest from the station this year. I cannot believe the difference a stack of yagis make on the HF bands. I can call CQ in two directions simultaneously or use the array together to break a pile up.
I am very impressed with how my 40 meter Yagi performs at 110 feet. I never realized raising it from 50 to 110 would make this MUCH of a difference. 40 meters is like 20 meters now, except less crowded!
I attended the Dayton Hamvention in May 2012. It was the best hamvention yet. There were lots of new things there to review and I enjoyed the CQ DX Hall of Fame ceremony where my friends N4AA and W0Gj were both inducted. They are first class hams, DXers and people!