personally i prefer the single stage tractor units to the 2 stage units, they have fewer moving parts and usually are heavier duty. now im taking about single stage tractor units, cause single stage walk behind units suck. usually people think of those little 2 cycle toys when they think of single stage, not the powerful tractor mounted units we have. i only had a problem with the greenie single stage clogging up once this year. it was that first snowfall, really wet and heavy stuff. most 2 stage units wouldnt throw that crap either. i just shut the pto down and pushed it like a plow. tractors have enough weight and power where you can do that as a last option.
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