To your question and a few other comments made on the thread...
1. Saying that cloaking is no longer effective is silly. Cloaking has evolved as have search engines and ad networks. Where as 10 years ago cloaking for search traffic was the most common scenario, today it is cloaking paid traffic. But the basic concepts of detecting fingerprints by IP range, referrer, user agent, geoIP, etc. are still the same.
2. What makes a "good" cloaking script is (a) support; (b) updates -- which is another way of saying support. Whether it is my script, Mr Black Jack's, NoIPFraud, or another the advantage of these is that if you send an email or submit a ticket you get a reply and action as needed.
3. "wpCloaker" is not the same as "wordpresscloaker" -- these are two different products marketed by two different companies. I only comment about wpCloaker since that's mine, but too often folks will get them confused.
4. The best settings for wpCloaker depend on what you're trying to accomplish. I always tell people the same thing -- use the support desk to ask questions and pick our brain on how to best support your specific scenario.