Oliver or hesston

What what you guys go with a oliver 720 or hesston 4500 I understand you can use a manual from the hesston for the olive but not sure if there was any difference within the two I usedan a friend's jd327 last year but she had some guy run it after I spent all summer getting it going good and it's in need of a lot of repair again I would rather work on my own then fix that again what would you guys go with it do about 30 to 40 acres and round bale 10 to 15 of them thanks for the help

Oliver or hesston