[SSTHottie1236]

On tricky tracks, it's nice to have the air-on/air-off throttle stops, the electic snaps back quicker and if the track isn't there you may be driving a little more than you'd like. The under the carb stops seem to be the most consistent but also more expensive and depending on which one you purchase, you could lose a substantial amount of horsepower (I've heard upwards of 40). However, I've won my fair share of rounds with the linkage setup so don't worry if the under the carb is not in the budget.
As for the Pro Cube, we have one in both cars. My dad has had the same one in his car for 10 seasons and (knocking on lots and lots of wood right now) has never had a problem. We did however send it back to K&R this year just to have it updated so you could send it back to get a clean bill of health if it would make you feel more confident and they were great to deal with.
Hope this helps!

Kelli
1236 S/ST