Southern Lake Michigan has four entries close of Chicago that are ranked by him among 100 best. These are:
1. Wells Burt
2. The Straits of Mackinac
3. Tacoma
4. Material Service
Of all of them are great but if I could have one pick it would be Wells Burt. It is a huge three masted wooden sail ship that went down 1883. It is in 45 feet of water and surprisingly intact.
I have been on the Straits of Mackinac twice. Its not my idea of a great dive site but I understand why some divers love it. It is an intentionally sunk boat that has been cut open and at least partially sterilized. I would dive it again, but I'd rather see something new.
The Wells Burt is right near the Mack and is one wreck that I am interested in seeing. I am particularly interested in the construction of wooden boats and ships and so it has more to attract my interest than the Mack.
I have not been on the tacoma or the material service barge which is a favorite of the dive op that i have used. They like it because it is close to home for them so when the weather is a little rough they can offer to dive it. They also tell me that it is an interesting site with a lot to see, though visibility can be low due to it's shallow location.
In the same area is a site known as the Illinois and the Holly Barge, two wrecks side by side, the Holly Barge was put there on purpose from what I recall. I found the Illinois to be very interesting as lots of construction details can be seen and much machinery is still there but it is mostly a collapsed pile of parts at this point. The Pile spans 150 feet or more in length, I only explored the length of it on one side when I dove it last summer. I probably only saw 20%of the site. The Holly Barge is OK too, but at that site I would just swim over to the Illinois and spend my bottom time there.
the David Dows is in that general ares too and might be worth a look.
I have also been to the Muskegon. Which is a pile of rubble, part of the bottom of the hull, a boiler and some of the general machinery.
If you get serious about any of those I would be up for a trip over there. In good weather I can run my boat to any of these sites by launching at the Hammond marina.
Jerry