I don't know what sort index is exactly. Evernote needs to find EVERYTHING. Just like any decent text editor does. Give me the option to do a text search without using any indexes. Just go through ALL the text. I don't care how slow it will be. I would rather wait 3 more seconds than not finding what I want. I don't have hundreds of thousands of notes where I am going to worry about performance and even then I would rather wait. Computers are very fast these days. People want to find notes. Let me worry about performance, not Evernote.