I agree, a UAT is an important factor in the safety and reliability of your jet.

I would buy a BVM UAT, or if you want to find a cheaper one go for this one from BHanson:
http://www.rcuniverse.com/market/item.cfm?itemId=309178

I have both, and both work great. the one you linked to will easily deform under pressure of the pump sucking fuel, and might purge some air in - a friend of mine has this happen !!

That is not a UAT at all, but rather a standard header tank, i wouldnt use it on a jet for the lif of me. it is a gas plane fuel tank. looks like a 3W gas tank by the way.