NH 940 or Hesston 4760 baler

Just wondering what to do. I own a NH D1000 baler and it's hard to get parts for it. I'm wanting to update to a 3x3. I found a BB940A baler for $29,500 and a Hesston 4760 for $37,500. The 940 has about 19,000 bales and the 4760 has about 30,000 bales. I guess I'm wondering what are the pros and cons of the 940 and 4760 and if you can still get parts for both of them. I also found a NH 590 with about 25,000 bales for $20,000 but I think I'll look into the 940 and 4760 first. Or are there other balers I should look into?

Thanks

NH 940 or Hesston 4760 baler