Looking to buy new spider rigging seat setup. Can not decide on what to get. Here are the three I am looking at. Any thoughts on these or others.

BOAT SEAT, GRIZCO DOUBLE SEAT SYSTEM - eBay (item 350279566869 end time Nov-20-09 10:07:14 PST)

BOAT SEAT, GRIZCO SINGLE SEAT SYSTEM - eBay (item 350279567190 end time Nov-20-09 10:07:56 PST)

http://cgi.ebay.com/BOAT-SEAT-ADD-A-...item3efa2a4793