How does TextWrangler compare to BBEdit Lite?
TextWrangler is considerably more modern and capable than BBEdit Lite. Among other things, TextWrangler offers full AppleScript support (including not only scriptability, but recordability and attachability), can open files from (and save them) to remote FTP servers, offers a significantly more powerful Grep engine, supports multi-byte and non-Roman text files, can perform Find Differences on pairs of files, and can be invoked from the Unix command line and receive the output of Unix scripts and commands. See a feature comparison here.