I don't know what OSX did before Snow Leopard, but the ability to change from contents to filename in the window directly was great! I navigate where I need to be, start my search, and only filenames or contents are searched.
Then along came Lion, and I have to use the Command-Shift-F to open a new finder window; browse to the network share and/or folder to start your search; paste the saved search string (you did have that text in a paste buffer, didn't you? Never hurts to save stuff you may need again!); and you see the magic little drop-down with filename pre-selected. You quickly save that search, because you never want to go through that mess again!
All I want is that little new drop-down to always be available in the search box. That would change the "Contents" display to "Filename", because you only get one shot to see what the search is doing, once you click that little drop-down, it goes away forever.
Apple blew it on this one