Bought one of these http://cgi.ebay.co.uk/TWECO-TC900-T...ultDomain_3?hash=item23052270ed#ht_735wt_1084 and a WP20 torch so I'm now water cooled for under £300. The WP20 is smaller, lighter and easier to manoeuvre than my old WP17 and I can weld a 6inch long aluminium weld without burning my hand. I always thought that water cooling was extravagant for the home welder but if you can do it for a reasonable price it is well worth it.