EZ Loader v2.60 by David Schmoll (Released April 25th, 1994) is probably one of the nicest menu systems I have seen for the Commodore 64 /128.  Although this version isn't specifically for the Commodore 128 becasue it will also work on the C64, I wanted to add it to the C128 section seperately.  Anyway, this program has tons of features and supports all kinds of devices including CMD hard drives, floppy drives and more.  The documentation on the diskis very thurough and should answer any questions the built-in help doesn't.