I used the Optima several times with no problems,.....th stinger i know is really famous...and the new kid on the block is the Kinetik....as wellas Odessy....Kinetik hve been getting excellent reviews internationally.
However, i was speaking to Ian from 12Volts a couple days ago....he told me that Odessy MAKES the Stinger as well as all other dry cell batteries....and the reason that the Odessy batteries (which 12volts sell) is a little more expensive is because odessy said they make the odessy batteries better than allthe other varios types of batteries they manufacture...hence the difference in price.
He also said the Kentik batteries are very "funny" to use due to the wierd internal resistance of the Kinetiks............

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N.B. there are the man's own words...
SR, can u comment?