Correct, microfiber with microfiber only. They will indeed pick up lint and other 'junk' from clothes. No dryer sheets because they will probably clog the fibers on the towel which would ultimetly render them useless.
You could dry them completely in the dryer if you don't mind the towels sticking together but you could also take them out earlier and let them air dry.
Basically the microfiber fibers are very very small and you want to do everything you can to get them cleaned and keep them that way. Adding fabric softener, lint, dryer sheets, etc. will clog these fine fibers which in turn will result in a towel that doesn't perform to its fullest potential or may even ruin it.