IMO, they fill gaps very well. I wouldn't have stuck with them since 07 if I didn't feel like I had a complete arsenal. Some pieces haven't impressed me as much as others, but in the bag right now, I am really digging the King Cobra, Network, Darkness, Hook. Others are more condition specific, some with layouts meant for different motions, but there isnt one up top where I am like "Meh, not so much." Desert Hook is great for the burn, Grip it with that layout is great for controlling wet dry, Dirty Look is great at opening up the lane.