I can't speak to this model but I figured I would throw in my 2 cents based on my new mowing tractor.
I have lots of landscaping and trees to mow around near our house and we had been using a Cub Cadet (similar size to the
G2160). Over the past 10 years I have really grown dissatisfied with the mowing ability, not because of any problem with the Cub -it is a great lawn tractor- but because we keep adding more landscaping to mow around and because we have some unusual terrain problems to deal with.
What I found after a fairly extensive search, is that mowing speed has a lot more to do with how tight a tractor turns, than the size of the mower deck or the HP of the engine. I bought a Ventrac 3000 with a 52" deck and figure that eventhough the deck is 2" smaller than the deck on my Cub Cadet, we will cut our mowing time down by 90 minutes a week because the Ventrac turns in half the space as a typical lawn tractor.
If I did not have hills or rough ground, then I would have looked at something like a Zero Turn Radius (ZTR) mower. But those things don't like lawns that are not as smooth as a golf course and they won't do the steep grades I have.
My advice to you is to forget about any particular brand. First you need to decide what you are going to do with the piece of equipment you are considering. Is it just mowing & pulling a cart? Is it mowing, snow blowing, and pulling a cart? Is it all that and using a front end loader, a back hoe, a tiller, etc, etc, etc?
Once you know what you REALLY plan on using the equipment for, then look for the best one of those things that you can afford (not the most expensive, but the best at doing the jobs you need done).
My new Ventrac is a killer machine, I'd recommend it to anyone, but it was expensive and is overkill for people with generally flat or rolling land. But I wanted the best mowing machine I could find, and I ended up looking at brands I never knew existed and bought a brand that I never heard of. . . and am thrilled with it.
If you want a small tractor to mow the lawn and if mowing is what you are going to do with it, then I suggest you look at a front mounted deck mowing machine not a tractor. Kubota and Deere both have a couple different lines of those units and they will accomplish the mowing in a much shorter amount of time than a small tractor because the front deck will go under the shrubs, they will turn in 1/2 the space, and you will get the job done quicker. ZTRs mow fastest of all, but only if you have a smooth lawn.
If you plan to till the garden, then going to something a bit more versitile would be good. Ventrac, Steiner, JD X series, JD 2xxx tractors, Power Trac 180 or PT 422, Kubota BX units, NH "TZ" series and Massey GC tractors all come to mind . . . of all of this class of tractor, Ventrac, Steiner and Power Trac will mow MUCH faster than any of the other units and all will run implements as well. The Ventrac, Steiner & Power Trac units will probably mow as fast as dedicated mowers. Power Trac would be the most cost effective of the group but does not have local dealerships so you buy direct from the factory.