So, I've been using QuickSilver forever, but lately it's becoming slow. I think I'm too low on memory for the modern version of QS to work well. Also, development seems to have slowed or stopped on it (no updates since August?). LaunchBar, however, just went to v4.0 and "they" say it's much quicker and all that business, but I feel dirtly leaving QuickSilver, and I don't yet know if i can control iTunes with LaunchBar and all that stuff. So many questions.... ...What do you guys use?