- extensions (Firefox and Chrome APIs support)
Cookie control of CS Lite doesn't seem more flexible than Opera's, it just has different UI (the toolbar button).
Ghostery seems to be a blocklist (supported) plus some cookie read prevention (missing).
Secret Agent spoofs many values.
More than half of that is already targeted by Otter, being Opera features. Why use addons if the functionality is available natively? ;)
For your spoofing needs, stay tuned to this phoronix channel, at this phoronix time.