First off: what Peter_C said. Everything he said.
Second, the advice I have for you is to test ride as many different trikes as you can before making your decision. I had a list in my mind of trikes to try and ended up buying one that was not on my list. Some of the others were OK, but the one I tried on a lark was the best!
You might have to take a day off or use up a weekend to do this, but it is well worth the effort. I believe there are a number of recumbent dealers in southeastern MI but since I don't live there anymore I can't say for sure.