Quickfire Rapid is an oft-recommended beginner mechanical. It really depends on what you need. If you are really down to either the TK or the Filco, then it should depend on how much you want a tenkey pad. Let me say, though, that if you expect to get pulled in to the "lifestyle" of GeekHack, then you probably want the Filco (or QFR to save some money). If you are expecting to just buy one and stay out of the scene, I always mention my personal faves from EK (Realforce, Leopold)