jesse st.clair

My 01 ws6 has gone through 4 alternator since july. I just put another one in it yesterday andit lasted all of 4 hours. The pre one lasted about 2 months. I'm thinkin its just these shitty remen delco alternators. If anyone has any advice or has had a similar problem please let me know any help is better then no help. Also what kind of alternator would anyone suggest?
Thank you.