I'm working on an app where there are multiple pages where there are a range 2-6 choices of a specific filter. Is it better to use the same control (dropdown) since for each page for consistency or use the best control for the number of options? This question isn't about when to use radio over dropdowns, but do you use both based on number of items or strive for consistency in using the same one - all radio or all dropdown regardless of the number of items?
For example, one page only has 3 options for filter, so use radio buttons. The other page has 10, so use dropdown. Would it be better to do it this way or use radio for both pages? Or dropdown for both pages?
Any usability test results of a similiar situation would be awesome. Or an example where you found other rules trumped consistency rule.