I'm going to differ from Mike and say, if the yard is flat, skip self-propelled.
My neighbor has the Troy TB110, and I've used it a couple of times recently. I really liked it. It's very lightweight, which makes it very easy to push and maneuver. They've gone to a plastic section in the front, between the front wheels, and the weight savings up front makes the mower very easy to turn. The no-choke start seems to work very well, and it's got upgraded, pleated paper air filtration. It's a pretty refined push mower for an entry level product. Surprised at how quiet it is. Only real weak spot is the lack of a cast-iron sleeve for the cylinder.
I have the MTD 22" with the smaller 450 series engine that Walmart sells. It's not quite as light as the Troy, has a foam air filter, and a primer bulb. I bought it as a stop gap solution to mow near my house while I figure out which zero turn to get for the entire property, and I happened to have a Walmart gift card. Would rather have had the Troy, but the MTD works well enough.
I have no doubt the Honda motor on the TB130 is a more refined product. Every Honda motor I've ever owned has been a gem. But, it's still an entry level motor, and the OHV motors on the other machines are basically copies of the Honda.
Don't have any experience with the Cub Cadet, but it looks nice.
Given that the difference is only $50 from top to bottom, and over the lifespan of the mower, it works out to about $7/year, you should buy the best one...whichever that is.
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