Thanks - I do agree with the PPK, it actually looks a bit strange with that big bit coming out of the butt! I know you can cut that off and just tighten with a screwdriver, but I would rather not mess with it. As you say, maybe its one to leave for now and get when a cheap one turns up.
On the TFW, I just feel its also one I can buy later, although I do feel its probably the best value, most realistic and most fun on the market. Are they fairly easy to buy new?