I've read through all of them, and pulled elements from them for other adventures. I've at least started running all the above, with the exception of the Giants and Descent series (made my own version of those, but ran Q1 as-is).
My biggest regret is while I've twice started the Dragonlance series, I've never gotten deep into the first adventure.
On the other hand, I've run Ravenloft for every group (not neccesarily per campaign - per group) I've DMed since 87 or so - so somewhere around 8-10 times. My all-time favorite time was running Ravenloft and Griffon Hill concurrently, with the party magically and 'randomly' bouncing between Barovia to Mordenshire.