sttng is the better game I reckon, deeper ruleset, it's one of the best pins you can get. Taf was very popular in it's day and many people remember playing it so it's now popular for that reason. The sttng is cheaper too so that's what I would go for

Sttng is a serious game though as you get through your missions and battle against the Borg but has great sound and an unreal muliball with cannons and the Borg firing back at you