I don't think arrangers have "tons" of drum sets compared to workstations, FL and such. Especially for techno... If i'd use standar1 or whatever for techno it would be the same thing as playing balalaika as a guitar solo. I guess you just not familiar with today's modern drum sounds for techno music. It's a joke to use arranger drum sets for this type of music.

It's amazing that a $99 piece of software have much better drum sets AND arp(!) than a $2000 arranger.