Just be careful when you get to interior soft plastic, wood grain (or fake), chrome, etc. The softer stuff will scratch and if you've ever seen swirl marks on your own speedometer it will **** you off.
On car paint, just make sure the towel is extremely clean as those are not the best at being plush and thick. Finally on some finishes an low quality microfiber will visibly marr it. At least do a CD test to see how harsh it is.
There is a very noticable difference in microfiber towels. It is well worth it to invest in better quality towel.