Pros:
Chi Bro DGC is a 9-holer in the small town of Manchester, MI - about a half hour's drive west of Ann Arbor. It plays in a back of a multi-use park, well away from other park activities.
The course essentially has three long holes and six short ones. Overall, it's a decent mix.
The long holes have two tee pads. From the long pads, each of these holes is a 500'-550' par 4. If that sounds like too much for you, the short pads on the long holes reduce those lengths to 250'-400'. These three holes are moderately open but each have a few trees to contend with, and thicker rough off the fairway. These holes are also flat for the most part, other than #1 playing down a rolling hill off the tee and up another one on the approach to the basket.
The six short holes have one pad each, are all in the 150'-225' range, and are generally tightly wooded. Some of these holes have significant elevation changes. #3 and #4 both play through very uneven wooded terrain, where an unfortunate tree kick might send your disc down a small ravine. The sides of the ravines have ropes installed so that you can safely get down and up the steep slopes. #7 is a fun downhill throw that plays off the top of another steep hill. #9 has a pond on the right side of the fairway, although it's far enough off to the side that it would probably take another bad tree kick to reach it.
The infrastructure here is mostly great. The baskets are yellow banded DISCatchers (one pin position per hole). The tee pads are all concrete, including the short ones mentioned previously. The tee signs are next to each pad and have all the needed info. There are white arrows nailed to trees near each basket that direct players towards the next tee.
The park has trash cans, benches, and a porta potty.
Cons:
The rough is pretty thick in spots. When I visited in mid-May, there were some thickets of wildflowers blooming on the right side of holes 2 and 3. It took me a while to find my disc. While it was far from the worst I have seen, I do worry that it could be tougher to find discs in mid/late summer.
Some tee pads are a bit close to the previous basket. It wasn't anything egregious, but enough that I took note.
There are no signs directing from the parking lot to the beginning of the course. I had to look back at the course info page to figure out where to go (Hole 1's tee is a short walk away, through an open area and next to the water tower). The designers could add a practice basket and kiosk with course map somewhere in this open area or near the first tee. I could have also used a couple of benches out on the course.
You could argue that the variety can still be improved here. As discussed above, the holes can more or less be fit into one of two categories. Tweaking the layout a bit to lengthen a couple of the wooded holes, and possibly shorten one of the more open holes could make this course even better.
Other Thoughts:
The previous reviewer danhyzer tipped me off about this one, and I do not regret detouring here on my day trip over to Ann Arbor. This is definitely in the top tier of 9ers I have played. In fact, when I think about "best 9er I have played" the only other course that comes to mind is Flaherty Park in Watervliet. If you're anywhere nearby, come check this one out!