Nice! Aluminum deck or steel?... I now have a Snapper Commercial self propelled with the Robin 6 HP engine.
What a beast very heavy and well made. It even has steel wheels with greasable bearings. This thing will drag me if I let it. Very smooth and great to use. It will cut through foot tall grass without slowing down. It have a 3 stage air filter and oil filter with pressure lubrication. I haven't used it lately as I now live on a 1 acre yard and needed a rider. If anyone is interested let me know I live near Louisville KY. Would love someone else to be able to put it to use.
I have a 2011 model year Snapper ninja commercial 21", but it's got the 180cc briggs "professional series" engine w/ spin on oil filter, etc. Heavy steel deck.
Like you say, it's a beast and heavy, but the oil school snapper disk drive will scoot it along at running speed if you want it to.