You are asking the wrong group, why yes, a Cub Cadet 109 is a good tractor, any old Cadet is good!
I am just learning about them and someone more knowledgeable will chime in I am sure. The 109 is in the first series of the “wide frame” which is a plus according to some people. They fall in the 1X8 / 1X9 series. It also has a hydro transmission, which is a bit advanced for my simple mind, many love them! At this time I preferred to keep things simple and stay with the gear transmissions, basically the same as in a Cub.
This becomes a personal preference that you have to decide what you want. They are well built machines but like Cub’s they require maintenance but parts are readily available. I suggest you do a little research and see what is available and what will meet your needs and make sure you keep that in mind and not settle for something that does not meet these needs. It may take a little looking and waiting but in the long run you will have a much better experience.