Well, the problem with locked grooves is that they don't go anywhere. Even the introduction of a simple hi-hat or a short break now and then can keep the crowd on their toes, as far as loopy techno is concerned. But I agree that some artists seem to blow tracks out their asses, producing one looped track after another, which leads to DJs digging through tons of loop-based records to find the good stuff. This is not to say all loop-based techno is shite, just that it's become a formula and it's hard to find a good record among all these uninspiring formulaic ones.