This thread made me lol a bit. I think you should just buy a keyboard, try it out and see what you like/don't and go from there. If you just want to try reds, get the poker, because it is fairly cheap and it should resell easily if you don't like it. If you find that you really like reds, you could either keep the poker, or sell it and spring on a full size filco with reds. As far as blacks go, they don't move quite as fast on the classifieds here, so I would look for a cheap cherry brand board with blacks that you don't mind keeping around.
As far as the topre goes, I am in a similar boat in that I really would like to try it someday, but I am going to try most of the other switches first. I have browns currently and love them, but I am going to be trying blues, reds, and topre in that order eventually.