I've got a TK20, got one for my wife, one for my father, one for a friend and generally recommend it for outdoor use because of the neutral white LED, the rubber coat and because it uses 2 x AA (instead of CR123A which can be quite expensive...)
I would never consider to buy that Propoly though, just overflew the review. 4 x AA are 2 too much, the LED is outdated, the runtime short and I don't like plastic. To me this is comparing apples to oranges and of course I recommend the TK20 also to you, fantastic light! :thumbsup: