maintenance, is it easy or a PITA?
wear parts? Like rubber ball detentes and cost?
Finicky? did it work out of the box? as it should or where you messing with it to get it working.
comparable , across models or brands. 07 vs 08 model is it worth it? and/or if you like how xyz handles you will love this one.
overall fit and finish, there is really no end.
You could make a standard template with all the most pertinent information and just plug in the answers and leave a notes section within each section.