I mow a 1 acre sloped lot. Last mower was a Cub Cadet, a Deere before that; both purchased from dealers, not a big box store. The Cub was nothing but expensive trouble almost from the beginning. The Deere was much better, but still nothing special. After a lot of time, thought, and research I decided to go with a used Kubota. The grounds crew where I work uses mostly Kubota equipment and I admired its durability.
I knew I wouldn't pay $8k+ for a mower so I bought a used G series (
G1900). Didn't necessarily save money over what I could have bought a traditional mower for, but the quality of the machine--even well used--is far better than anything else I've owned. I would make the same decision again in a heartbeat. Built like a tank with a 3 cylinder diesel that has power to spare. Hard to describe, but there's just something very satisfying about a smooth running diesel engine matched with a well engineered machine.
Part of the bartering process with my wife for getting approval to buy a BX last year involved possibly selling the
G1900. BX with a MMM is great, but I just don't want to let go of the
G1900. I am running out of ways to distract her when she asks when I'm going to sell the
G1900..."Look! A squirrel!"
I don't have enough experience to say a Kubota G or GR series is better than comparable equipment from other brands. Can say without reservation the Kubota is the best mower I've ever used and I would take a well used Kubota over any new traditional lawn tractor.
Good luck!