I have a 569 with megawide plus pickup. I'm have no experience with other balers but this pickup is amazing! 

Especially this year with rained on hay that I've had to rake and then later turn the windrow over again (with one side of a NH wheel rake) leaving a less than ideal windrow in a lot of places. That Megawide plus pickup does a great job of getting the messy windrows into the baler. Just have to run the pto at full 540 rpm.