Well I bought a trolley system on Friday. I was adviced to get a 27' pole by a mate. I got an Unger one in the package. Now I've cleaned the top windows of my house which has an extension. The pole was fully extended and was really hard work! The pole was swaying all over the shop. There's no way I can use it all day, I'll end up looking like Popeye. Here is my question, which Gardiner pole will be best for normal 2 storey houses. The CLX10 or the CLX14? Also, how does the fitted flow valve they supply work? Thanks.