From memory the PUTW is about 70 quid here in the UK, and teh Fishman about 100.

As far as I have been able to find Fishman do not publish technical details like the input impedance of their belt preamps, does anyone know better?

I don't remember any details of the input impedance of the PUTW one being on their website last I looked, but I will check.

Maybe I just keep on with a little DI box, albeit it gives me no volume control (or carry a huge great old valve box mixer that at least has a huge input impedance - about a megohm or so...)