What is the best sales app/solution/tool for Enterprise Sales that focuses on Sales Effectiveness?

This, as opposed to Applications that focus on Efficiency. Efficiency meaning having more time, or getting more leads, or doing more meetings or demos or presentation. In other words getting more swings. Effectiveness, on the other hand, is having a higher batting average. More hits and more bases/RBIs per hit. Doing more with the same number of at bats. In sales lingo: better qualifying and deal conversion, higher ASPs and less discounting, and shorter sales cycle times.