Im seriously considering getting one of those rubbermaid coolers shipped from the US to the UK. Either way im gonna need to get a mash tun that actually employs some of the principles I have been learning about if I want to get an efficiency that is nothing to be ashamed about. Does the phils sparger fit on the head of these? I'd also be interested to know to what extent the SS false bottoms increase efficiency relative to the SS braided mainfolds some people are building.