Just bought one of these a short while ago: http://www.newegg.ca/Product/Product...82E16816111177. It's great. No problems, runs cool and is reasonably quiet. JBOD only, but I did what you suggested you might do -- I was using a software RAID with it, and have since switched to FlexRAID.
Yes, you'll need a port replicator card unless your onboard SATA/eSATA is capable of doing it natively (mine was, Asus P9X79 WS mobo).