I can play either mode, usually...quick strike or kill 'em all. My only issue with the speed runners is that sometimes it would be nice to have some help getting past the 3 Centurions and such that happen to now be blocking the door that the speeder zipped through. I'm a Titan that isn't as fast as other classes and sometimes can't quite keep up at the speed of other classes. So then, I'm forced to hang back and snipe out some beefy mobs or die a few times trying to get past them. If the whole group stays together and zips through things quickly (even a speed strike), then things go much more smoothly.