Oh yeah, I forgot: a whole set of crazy distorted techno isn't as boring as a set of looped percussive techno tracks...
And there lies the problem. People are blinkered and there are too many tunnel vision DJ`s.
Yes a set of looped percussion is boring, as is a set of schranz (crazy?), the secret to a good mix surely is a mix of styles, embracing the best elements from all the sub genre`s of techno.