Within the last 6 weeks, I've been to each of them except Motor City, and I don't play there anymore as they do not have enough VP machines. There are always people waiting to get a seat.
Not much has changed over the past few years, but I will mention a couple of things: the small non-smoking area at MGM has the worst VP pay tables on the entire floor, so I would expect the regular slots in there to be likewise.
All VP machines at Greektown have been moved into a couple of the small rooms in the annex area alongside Monroe Ave. Be aware that a bank of Game Kings which offer quarter 9/6 JOB also give you a short royal of 2,500.
Has anyone ever seen a $5 craps table at any Detroit casino?