I bought the stihl/kamasa/faithfull one for my parents - so far so good
All of the sub £100 seem private label manufactured from a couple of Chinese factories
Buy locally - if it does fail it's easier to warranty
Matt
I have this Stanley moisture meter-- http://www.axminster.co.uk/stanley-inte ... tAodAV8ASw
It works very well and seems to be quite accurate when compared against my much older Protimeter.
I can recommend it for the below £100 range.