Looks like the "Old Search" is king, i have even sent a message off to Ancestry complaining about the "New Search", it is so inflexible. I liked the search before they altered it, going through qtr by qtr might have been a bit long winded but far better than having to rely on their search engine.
llamafarmer, are you using the general search box, if so, don't. I am sure you will find that most of us navigate to the collection to be searched and use the search facility within it. As for the info you supply, don't give it too much info, it gets confused, keep the info at first to a bare minimum and you will find you get more results. I think all of us have gone through the "trial and error" process with the various search engines on different sites, they all differ slightly but you do get the hang of it and as for records being mis-transcribed, yes it's a pain the the butt we have to live with.
bren