Bivy and tarp combo all the way..fuck tents of any kind. For me the only thing worse than having to carry a tent is packing it up in the morning. Until I'm rich enough to hire porters to carry and pack my shit when I go on tour, tents are out. I lost my last one under a train and Ive been happy ever since.
I didn't even use a tent for a while afterwards but after a few really bad rainy hell tours I had no choice but to at least arm myself with the bare min. for me its all about the easy of packing up..especially if your in a rush. Nothing like taking down, role up and put the pegs away on your tent while your train roles in....but even for regular camping just hate packing in the morning..specially after a few too many drinks the night before