This may sound like heresy but I always find gmail search -- when I'm looking for something in the subject or sender -- to be a bit slow compared to search in

This may sound like heresy but I always find gmail search -- when I'm looking for something in the subject or sender -- to be a bit slow compared to search in a local mail tool like Thunderbird or Evolution or Mail.app. If I need to search entire message bodies gmail is of course much faster, but often sender/subject search is all I need.