I'm with you on that, John.
If you had to have "the best" solution and were still in the experimental world, you might try this:
http://search.digikey.com/scripts/DkSearch/dksus.dll?Detail&name=945-1285-ND
It's $125! It must be the best. But seriously, it's a medical grade, 20 watt, 2kVDC isolated, high temp, 6 side shielded, 28 gram piece of beauty!
Match it with a panel or console mounted receptacle:
http://www.amphenolcanada.com/ProductSearch/pdf/MUSB_BRO.pdf
...and you have a very expensive and clean install. That and it would run 2 iPads while only dissipating 2 watts of heat. Some of those cheap cigar plug power supplies would melt trying to cope with that type of load.