I've been all over the generator map with Honda. You're going to have to look long and hard before you find anybody that doesn't like them.
HOWEVER: Honda doesn't really have a niche product for running a 13.5k A/C unit without stepping up to the 3000 watt range (very pricey, very heavy) or duelling Honda EU2000is gensets.
If your A/C is a 13.5k unit, and that's what you're most concerned with, I would buy this in a minute:
It splits the difference between the EU2000is and the EU3000is. Weight, cost, output. Its a inverter so it's quiet. Nowhere near as quiet as the EU3000is though (i think its the quietest genset on the market) its only 2db higher than a single EU2000is. Twin 2000is will be louder than one of these Yamahas however .
The Yamaha comes with this nice feature:
This model boasts High Current output which is designed specifically to increase motor starting capability and to improve air conditioner starting. This High Current model starts most high efficiency 13,500 btu AC in temperatures up to 110° F.
3 year warranty. Its the one I'd purchase.
I've had twin EU2000's, and I currently have a EU3000i for home backup power. So I'm not talking out my backside here.