Does central Iowa even get enough snow to necessitate a 2 stage?
I had a single stage for awhile in far north Iowa and it was completely fine. My mom gave me her 2 stage because her husband decided it wasn't fancy enough, and we get maybe 2 snows a year where it cleans faster than my old single stage did, and as someone else pointed out, the single stage always got it cleaner.
All depends on your circumstances. In terms of actual snowfall in inches, we don't get many snowfalls that would necessitate a two-stager. But I live on a corner lot with 100 yards of sidewalk to clear, and the plow leaves a lot at the end of my drive and especially at the sidewalk curb cut. Plus everyone else's melting snow runs in my direction so all of that is usually extra wet. Then you throw in the wind tunnel effect between me and my neighbor that produces some pretty big drifting.
There are times when I'm pushing even my Ariens two-stager through drifts almost like I used to push the old blocking sled in my playing days.