Our R52 has no chopper, only impeller cutting soys with a 24 foot head.
We plant winter wheat right after the combine without any concerns regarding plugging, depth control or emergence of the wheat. We have been doing this for over 8 seasons.
The spreader does a good job of spreading the stalks over the 24 feet.
Our wheat planter consists of heavy coulter cart that pulls a JD455 drill. Both these units have hydraulic down pressure and cut the soy stalks well.
Sometimes we get into a lot of crop material going through the combine . If we get rains during growing season, we can have over chest high beans. And we like to plant thick, solid seeded with final stands usually over 225,000.
I don't think we could do any better with a chopper. I do know a chopper would take more HP to get the stalks through the combine.
Sometime when we look at a neighbours field after going through a heavy crop of soys, we see a deep, fine mat of material behind the combine and wonder if our system with no mat, just stalks spread here and there would allow the soil to warm quicker.
That is just a theory---I have never taken a thermometer to the field to see.
To further answer your question, our combine leaves nice wheat straw for baling, but since I have never baled behind a Gleaner with a straw chopper I do not know if it is any better than with a chopper.
I hope this helps;