We have two of them, as well as a 60".
Personally, I see no reason to purchase another brand, except for the better paint job.
One we have had for 3 years, use on landscape jobs all summer, and also used on some slightly frozen ground last winter without a bit of trouble.
They are the 6 flange style. My Dad had Befco, JD, etc before, and after seeing how well the KKs did for us, he bought one as well.