Well, I guess I'll chime in on the batteries (not touching the Generator debate ...

).
Most of you are talking about Group-27 batteries. I am (and have been, on the prior 245 Sundowner) using Group-29s. A couple of Group-29s, in parallel, for your house batteries ... is only a few dollars more than using Group-27s and you have an upgraded Amp-Hour rate. I use the WalMart Group-29 units (at about $85 each). They are rated the same as the Interstate Group-29 and I have had great success with them. In fact, most of the Maxx (the marine line) WalMart barrteries are made by Johnson Controls (also Delphi and Exide, as well), who are HUGE in marine batteries.
Remember, if you want the best life from your deep-cycle batteries, you can't just drain them until they're dead. You don't want to go past 50% charge before recharging ($75% is even better ... for long, many cycles, life). This is where using more than one battery makes economic sense. Sure, you could run that single battery for maybe almost as long as I could run the dual set (to a max of 50%), but you'll be replacing that battery long before mine would be ready for replacement.
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Gordon Arnold
New Hampshire
2003 268 Vista ..................................................................Prior: 97 245 Sundowner
