The timeshare industry is huge and there are so many different companies offering products that it would be very hard to create a top 10 list of the best timeshare companies, especially a genuine independent selection.
One would need to consult specific criteria and rank the companies accordingly deciding which qualities were more important than others. Needless to say it would be almost impossible to complete. Another concern would be that any such top 10 list would surely be overpowered by the large corporate giants that dominate the industry leaving little option to include smaller yet established names that are focused on just one area or country, like Villa Group in Mexico. In many cases, specialized timeshare companies offer much better services and facilities, especially as they are experts in their particular market and country of operation.
Any list of the 10 best timeshare companies would also have to consider vacation clubs, which play a big role in the modernization and evolution of the timeshare industry. Although there are many vacation clubs to choose from, amongst the top 10 world surely feature Interval International and RCI.