Of all the classes I've tried and gotten into the 30s, the Shadow is my hands-down favorite. But I think I'm playing it differently from most, and if necessary, want to be sure I can adapt to a new build and rotation before I reach 50. I play PvE with a Kinetic Build and with Qyzen. I tend to strategize a lot, using a combination of stealth, cc and having Qyzen tank or offtank. I think it's that versatility that has kept me excited about Shadow. I've briefly tried Infiltration (at 30+) and other companions, but keep coming back. I'm also meticulous about gear: I'm in custom which I update about every 3 levels, and I try to keep Qyzen in Aim-intensive prototypes with shielding when I have a choice of a secondary stat. When in a group, I either off-tank or tank (by accident) depending on the others. I say I'm DPS, but I think I'm more a hybrid.