I've owned both of these games, and sold both. Both are very difficult games to master; I really wanted Creature to be a keeper. Loved the art, theme, etc. However, the call outs and music really got to me in the end. I just wasn't a huge fan of the 50s music after 200 + plays.
To answer the OP's original question - which was "what game is the best bang for the buck", then I'd vote TFTC just because it's a lot of game but can be had for 'less bucks'. I also agree with other posts, that the hologram potentially going black is a huge concern over time. Once that happens, I'd have to say that the game loses a good deal of luster. Just look at what CFTBL machines sell for with a holo that's turned blue, or is black. They're easily $1000 less than one with a good holo goes for. Any way, just my $.02. Let us know what you decide!