TAF is more of a package i reckon... we all remember it onsite, it looks good, great theme and some cool gimmicks. But it suffers from repetition in its game play and yes - the PF area is small and tight.
STTNG is a much better game, much much better shots, but it doesnt look anywhere as good as TAF ( unless youre a Trekky and Pickard is your bag).
I played a STTNG recently all blinged up with LED RGB etc... looked outstanding and was a blast to play.
Oddly enough though.... given the choice id take the TAF... cousin It beats Jean Luc any day