Go
M59 or
L48, the
L45/39 is just to small compared to the others. The tires are tiny in comparison.
Depends on what you are going to use the tractor for. I chose the
L39 over the
L48 because a wanted a smaller tractor for maneuverability in tight areas. I was originally looking for a JD110, but could not find a used one at reasonable cost that was not all beat to heck. I looked at the
L48 but decided it was bigger than what I wanted. You do have less ground clearance with the
L39 or
L45 so that is a drawback. And of course, you have much more power with an
L48 or L59. Other than tire size, the JD110 and
L45 have essentially the same specifications.
EDIT: Follow up on the JD110. Any hydraulic remotes, front or rear, are factory options only. So if you are looking at used tractors, make sure it has what you need. The three point hitch is an option, so again not every used tractor will have it. I think the hitch was about $800 from a JD dealer when I was looking a few years ago. Also, depending how and where you are going to use the tractor, there is a skid plate option for the JD110. It has a lot of hydraulic lines on the bottom and I saw a lot of damage to them on used tractors without the skid plates. My
L39 has the hydraulic filters on the bottom and I made a guard for them after almost puncturing one. I am not sure about the
L45 but I suspect the filter location is similar to the
L39.