Never a question in my mind. I went with both power supplies. I run the small appliances (Outdoor TV, XM radio, phone charger, ceiling fan, interior lights, etc) on the 12V system and the major stuff from 110V (A/C, Laptop, DVD, Speakers, some interior lights, inside TV, coffee maker, porch light).
Am I a gadget freak??
The little lawn mower battery( w/trickle charger) does a great job and the 110 does the rest.
I wanted to be prepared for a lot of different situations so I also have a Honda generator to power the A/C and other 110V stuff if there is the opportunity.
I figured, why not be prepared so I tried to cover all the bases. (Scout's Honor)
