i dont have a real answer for you but,, worth the money? i dont know its a pespective thing. i can tell you that about 7-8 yrs ago i dropped an optima in my landcruiser that may go a month or so between drives, never a battery tender or charge needed it has been worth every penny of the $130 i spent on it back then.
IMO when its time for a new batt on my bike, my money will go to optima, odyssey ect. not a lead acid.