Tough question when you get into details, OP. As suggested, a LOT depends on what you are going to do with it. Yes, mow, but how much, what terrain, rider or push or self-propelled, bagging, mulching, both? What kind of grass. Leaf pick up in the fall? Pine trees? Pine needles to be picked up? Simple grass? How often do you mow?
There are fans of just about any major brand. Toro, LawnBoy, Snapper, Honda come to mind. Some (like me) go for the used LawnBoy 2 stroke models for power VS weight ration and not having to check or change the oil. Others would not touch a 2 stroke with an 11 foot pole (one foot worse than a 10 foot pole!). Honda has a reputation for quality and durable engines. Toro has been in the market for years and has a very loyal following. New Lawnboys have their fanbase, as do Snapper. There are others of course, like John Deere and a plethora of other manufacturers.
Personally, I've had the best luck with my Snapper Commercial Model. It's built like a tank, and it's been running like a top since 1987. It cost me a boatload back then (close to 700 bucks), but the investment was worth it.
I think if you stick with a major brand, with a GOOD dealer, you will be happy. If all you want to do is mow a small lot once a week of basic grass with flat terrain, heck, even an Amazon Poulan push mower delivered for $150 bucks will do the job. I've even cut a one acre lot with a rotary push Scotts mower in a pinch when I was too lazy to run out for gas.