It doesn't get much simpler than this for a 4 slot external enclosure. Slide the drives in, select what mode you want and plug it in and go. With the USB format, the enclosure is portable between systems, anything after Windows 98 doesn't need drivers and all the drives can be combined into a single drive. CFI Enclosure has put this at a MSRP of $149 and I think it is a good match.