I too got sick of buying a battery charger every couple years. Just picked up my new Associated 2 weeks ago. Bought it from the local auto parts store, they are a Bumper to Bumper franchise. He had the whole line available, but not in stock-got the one I wanted in 2 days, would have been overnite but I was in the store at closing time. He doesn't stock them because of the $$$ involved, said he sells them to garages and never hears from them again.

I got the 6/12/24V one with a 400 amp boost, it cost $590. If it lasts, it will be a better deal than a $100 one every couple years.