TFTC. Get it. CFTBL feels like pinball with training wheels on. I have played it; I practically had to FORCE myself to lose the ball.
TFTC is almost half the price of CFTBL with a lot more fun to it. Obtaining the wizard mode known as Cryptjam is a very tough task I've heard. Closest I've come is getting about 6 out of 12 modes lit up. CFTBL's playfield seems so cluttered in comparison to TFTC - with TFTC I can actually see the ball and where it's going. CFTBL has a ramp/habittrail that goes from here to China and so many ball scoops that I'm constantly going "Where's the ball again...?"
From my understanding, and I don't know this for sure, but CFTBL's hologram can be quite difficult to repair/replace if it goes bad on you. TFTC has a tombstone motor that can go bad but can also be replaced. With two habittrails - one of which does a complete upside-down loop shot, outstanding TFTC style artwork on it, easily the most unique ball-launcher out there, and more Cryptkeeper cheezy one-liners than you can shake a stick at, TFTC is by far a better buy for your money.
And here's a recent thread addressing TFTC's maintenance (or lack thereof): http://pinside.com/pinball/forum/topic/do-i-need-to-worry-about-maintaining-a-data-east-tftc
If TFTC had the "B/W", it would EASILY be a A-lister, and IMHO, stands right next to some of the best games out there with the "oh no not THAT name" DE logo branded on it.