You'll save much more time and get the right changes using a modern Fake Book. The chord capture to me is a toy and a waste of time compared to a book with the original chords that were written.

Now I agree with you 100% if there is no book or sheet music for a particular song, BIAB could help get started.

Most of the stuff I enjoy playing is in a Fake Book. The chords of many tunes on the internet sites by folks figuring out there own chords leaves much to be desired. Some chord changes on these sites suck, especially if the tune has b9ths #9ths, sus 4ths so on and so forth. Many of those guys do not know how to play a b9th, #9th or a sus4. GET A FAKEBOOK.