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Hi, if updating the results everytime a filter is modified is an option for you, I would suggest using faceted search instead.
Have a look at this article for example : http://envisioninteractive.com/drupal/drupal-7-views-with-faceted-filter...
If faceted search is not suited to your needs I would say that, yes, multi-options should work by now, but sorry I haven't tried it yet.
Please let me know what you'll have chosen in the end :)