Sound Level (high load): Two EU2000i vs. One EU3000iS

I had two Hondas EU2000 then I bought a EU3000. I prefer the 3000 since it takes up less room,elect start. I keep it in the rear of my P/Up which has a shell on the bed. I found the 300 quitter than the two EU2000 but not by much. I am nearly 80 and I can move the 3000 around with no help.