Good evening X_GuardiaN_X
There are many threads regarding the ranking value of extensions, and they occur so often it gets monotonous. The phrase "Com is King" has been used so much, and ingrained into everyone's mind, that I'm convinced it can become a hit song. I've already started writing the lyrics, and my nephew is composing the music. I plan to have a MP3 ready to upload somewhere soon.
After that? Who knows. Maybe a "Com is King" television special, followed by a live tour. Topping it off, I will try and get the members of the world famous Dallas Cowboys Cheerleaders to quit their jobs and begin new careers as the King Com Dancers. We can travel around the globe together, entertaining people with awesome music, hot dancing girls, and a brief presentation explaining why all other extensions are inferior.
Anyway.... we all have our silly little dreams.
Thankfully your request is unique from most other ranking threads, since you want to disregard .COM / .NET / .ORG and look at the alternatives. So instead of telling you to use the search feature and leaving the thread rolling my eyes (like I've done in about 100 other ranking threads) I'm actually going to participate in this one.
You want 5, and you are looking
outside CNO.
Ok, without thinking too deeply on the subject here is my opinion.
My top 5 values (in no particular order) are: .US / .DE / .INFO / .BIZ / .CO.UK
I did not rank them individually, because depending on the name, audience and market, all 5 have proven to hold significant value. I don't feel there is a hands down winner in all cases.
*My 2 honorable mentions, and both having exciting future potential: .TV / .IN