Hi Mia,
I'd either get the 900 watt or the 2800 watt (Kipor 3500Ti). The two thousand (really 1600 watt) won't run your AC and the 900 may provide you with ample power for everything other than that. Perhaps find a friend who has a "kilowatt" measuring device and see what your trailer "draws".
BTW when you run your generator switch the fridge from propane to AC--it won't overload the generator and will save propane.
My reasons for choosing a 900 would be weight (31 lbs dry) and ease of starting (smaller motor). The 2000 weighs in at 49 lbs. Run time is the same, but fuel consumption will be less in the smaller unit.
If you still wish to get the 2000 then get IG2000P which allows you to add a 2nd generator later on to double your output.
All the models have an "eco switch" so will run at the speed required to power your devices--for example if the fridge cycles off--the generator will slow down--saving fuel (and noise).
The 900 watt unit runs at a higher rpm--but noise level is identical.
I have a 25 foot "dog run cable" which I fasten to my generator and to my RV with padlocks. It lets me get the generator a long way from the RV in those more or less empty campgrounds.
Get a six outlet current tap and plug it into the generator--then plug your RV into that. Here is a url of what I'm talking about:
http://images.doityourself.com/stry/plugmultipletapLeave the current tap plugged in all the time.
I also plug in a night light to one of the current tap outlets--lets me "see" in the dark where to plug in the cable from the RV.
If there is room for a 2nd battery on your trailer--get one asap! It will give you much more "wiggle room" Lead acid batteries last much much longer when they are not discharged below 80% (hard to do with only one) and life is reduced dramatically if discharge cycle is to 50% of capacity.
The other alternative is to "kill" the battery that came with your trailer--and then get the two biggest meanest deep cycle batteries you can find at Walmart. (best price I could find).
On an entirely different note--I took my RV to Tempe, AZ last summer. At one point it was 123 F outside. I ran the roof air and the dash air at the same time to keep my cool, running my generator on a rack at the back of my RV.
QUOTE(sillypup @ Jul 7 2007, 12:53 AM)

Pianotuna, your'e right, one dinky battery is all I have, and I was told by the dealer that it would last approximately one day and one night while drycamping. And I guess the LP gas alarm uses the battery power and will drain it even if I don't use anything else.
Thanks for the great generator links, I think I've decided to go with the Kipor 2000 for now, and I can always add another generator later if I decide I need more power.
Jurhee, I can't even imagine 111 degree heat!!!!

I guess I'll refrain from visiting Bakersfield until I have sufficient generator power!
Mia