Id say either setup also.
A little more partial to the hondas as my old 2000I ran all kinds of things it never should have, and never gave me so much as a hard start (at -40c!) in the 3 years i had it.
but, in the same boat, my buddys have some yamis and they have been good units to them also, although a little louder.
As for running a single large unit vs 2 small units, it really depends on how much you plan to run high loads. With a paired set of 2000's you can run both during the day while the a/c is blasting, and run a single at night on eco mode and burn next to nothing for fuel.
If your planning on 'needing' more than the 2000w for the majority of the time, then id just suggest saving some hassle and going with a larger genset like the 3000IS. youll burn a little more fuel during low load (but less if you just leave the pair of 2000s running all the time), but youll also have a longer runtime between fueling
but... a pair of 2000's are alot easier to lug around, and if one craps the bed you still have a backup unit
'14 XLR 395AMP
'16 Ram 3500 DRW, 6.7 cummins w/aisin trans and 4.10 gears