I own a very nice St. Benedict's Crucifix. It is a rather large one to wear and it has the St. Benedict's medal in the center of the Crucifix behind the head of Jesus.
However, what I don't like is to see people wearing Crosses as opposed to crucifixes. Only a crucifix - the one with Jesus' body on it - truly means something - that Jesus Christ died our deaths for us. An empty cross is our own cross. Yet, it was Jesus Christ that took away our deaths. Only a crucifix is a medal of love and hope - not a cross. That's my own opinion.
St. Josemaría Escriva said, "Whenever you see a poor, wooden cross, alone, uncared-for, worthless...and without a corpus, don't forget that that cross is your cross--the everyday hidden cross, unattractive and unconsoling--the cross that is waiting for the corpus it lacks: and that corpus must be you."
If you don't own one, find some nice and inexpensive ones on Amazon.com.