My personal preference would be the UM ( even though finding parts is a problem at the moment ) because the riding position is more comfortable for me compared to the Michigan ( personal opinion ), mainly due to the ape like bars unlike the UM which has flatter bars so your arms are pretty much level, but bars can be changed so not much of an issue, also not keen on the footplates much prefer the pegs.
There are plenty of chinese cruisers about you have the Sinnis Hoodlum, Hyosung Aquila, Lexmoto Michigan as mentioned, there are some new stock of UM's arriving within the next couple of months which have several different styles of cruiser.
Having owned a UM for 2 1/2 years I can confidently recommend them, yes I have had a couple of problems mainly the mechanical seal but I did rectify that, but that was the only major problem I had with it, I have had no electrical problems, no engine problems, and most importantly no rust problems and it hasn't melted from being in the rain.
I do all my own servicing and maintainence on it to make sure it is done and it is regularly washed and polished.