I checked out the link posted earlier in this thread on MegaWatt single voltage/stage power supplies.
Their reviews from this ham radio site seem to range from mixed to outstanding, but maybe I'm misreading some of the comments:
http://www.eham.net/reviews/detail/9398I'd probably opt for this outstanding little multi-stage battery charging power supply instead, from Mean Well, with (passive) Power Factor Correction for only a few $$ more. This little jewel would do well with our 200 AH AGM battery bank even powered by our itty-bitty quiet EX650 Honda generator - be sure to read it's .pdf Data Sheet:
http://www.trcelectronics.com/View/Mean-Well/PB-360P-12.shtml