opinion needed battery charger

[frederic]

Its time to get a battery charger, 6/12 capacity. I have always wanted a GOOD roll around unit that provided the highest capability. Of course I would also like something reasonable. Tried a Harbor Freight unit and it let me down first try. Sears units look just like the Harbor Freight units. They seem to be Chinese but dont know. Any one know of a GOOD unit made in USA or ??

Thanks t all

Frederic