New member with lots of questions :)

Hi All I’m new here from the Midwest Minnesota. I’ve kept my eye on case machines for a while now with the loaders etc just curious what the differences are between a 644/646. I’ve also just found a Ingersoll 6018 with loader/backhoe curious what process and availability are on these machines?

update: just nabbed this 648 a hour and 30 minutes away!







Thanks in advance!