Build it yourself! I've helped making a custom SCSI tower out of an old PC miditower... can't be that hard to do the same but with USB.
Cut the tower in half right under the 5.25" bays. Install your USBhub and USB->IDE interfaces. Power button turn on the cabinet and Reset/turbobuttons can either be ignored or be used to turn of devices in the cabinet. Power Led=Cabinet Power, HD Led=One device, Turbo Led=Another device (add more leds as you wish or install multi coloured leds and have them show different collor for different devices). Connect the hubpower to the AT PSU so everything gets powerd on at the same time.
The imagination is the limiting faktor as it's pritty cheap to do. An old AT miditower cost nothing, cutting it to peises cost nothing. Use some spare leds scattered around saves you some $... only thing that realy cost anything is the USB converter and hub... but that should be nothing compared to prebuilt units and you can't put a pricetag on the "I MADE THIS" feeling.
