Takeuchi only makes tracked skid steers for the US market. As Dane mentioned, the Gehl and Mustang machines are repainted Takeuchi machines, and so if you are comparing, there is no harm in using them interchangably. I'm trying to say that if you have a Gehl dealer very close, you can still assume that all discussion relates to a Takeuchi machine just as much to the Gehl. Differences arise in dealer service.
The machines are well-built. Takeuchi was the first to bring very smooth pilot controls into the skid steer world, and has the left hand drive, right hand loader control pattern. They are rather heavy machines, but they are definitely strong and should stand up rather well to heavy applications.
Perhaps a backstep, but what do you plan to do with the machine?