Interestingly, the HotBot engine shows the highest recall. This relatively high recall linked with the demonstrated high relevancy among the first 25 hits makes HotBot a very strong search engine. These figures, alone, would merit a recommendation of HotBot as the search engine of choice for novice and casual users. All of the other search engines tested rank at the lower end with regard to recall. Remember that this is not necessarily a negative outcome.
Low recall coupled with high relevancy can indicate strong performers.
By these twin measures, and on the basis of their high relevancy, the Alta Vista and Infoseek engines would merit consideration for recommendation, as well.