Survey Questionnaire design - What are the alternatives to Likert scale in measuring attitudes?
In attitude psychology Likert response scales are still the norm. They do have their problems (and there are a good deal of problems), but many of them can be addressed satisfactorily.

The acquiescence bias you mention is a small issue. It can be balanced out by reverse coding roughly half of your test items. The acquiescence bias then becomes random noise rather than a systematic bias, which is annoying but not very damaging as long as your analysis has good power.

For example, if you have a 4-item scale that measures roughly the same thing, you could mix items like "The system provides accurate information" with items like "I would not recommend the system to others". 

Does that make sense?