I've gradually moved into higher end cues and found a real difference in Tascs and Black Boars. While I think Pete's cues are more reasonably priced, I reluctantly admit that my BB plays better than my Tasc. I won't ever buy a new BB, which is why I referred to them as over-priced (mine came by way of an excellent trade), but I was surprised by the ease with which I was making some of the more difficult shots.
I have heard that the secret is in the shaft wood. Both my BB and Tasc have very stiff shafts and tend to hit with more energy than my previous cues. Dennis Searing holds the same view about the importance of shaft wood quality and it sounds like SW has very high standards for their shaft wood too. I wish I knew the answer to what makes these cues so great because I would love to buy a less expensive cue with the same performance, but I think it's going to be tough to find.
Deanoc and/or Larry Viga/us may have the most experience with different types of shaft wood, but I do wonder if perhaps Ash or purple heart might create a similar stiff response given the scarcity of high quality maple shafts?