Didn't find Deltas any tougher to set up than other centerpulls ('long as you have a 3rd hand). Wasn't happy to shell out for the Delta specific 3.5mm allen wrench, but I was fortunate enough to pick the Deltas up before they went through the roof. Once the "cool & new" factor wore off I was happy to trade them away for some equally cool, but much lighter cobalto calipers.
If I recall correctly the cobaltos weighed about half as much?!