I have tried to read through all the posts on this thread as well of hours of reading other threads about this and it has my head hurting. We are very new to RV'ing and have purchased a 2003 Trailmanor 2720 SL. It has a RV Products 8000 rooftop AC. We also have a ton of Cabela's points and they carry the Champion 3100 and the Champion 2000. I like the fact you can stack the 2000 and run them in parallel and the fact they are under 50 lbs each. However I am not sure if it would be better to buy 2 of the 2000 or 1 of the 3100. If we didn't need the AC on a trip it would be nice to only take 1 of the 2000 watt generators vs. the heavier 3100. However, I have read some posts that say the 3100 actually ends up with more power when you need it vs. 2 2000's ran in parallel. Can anyone point us in the right direction?